Rado Diastar Tungsten Carbide Widia Day Date Automatic
Raro, classico na versão com metal duro como diamante. Swiss Made. Movimento automatico alta relojoaria, em ótimo estado. Design diferenciado (Caixa e cristal), linhas classicas porem absolutamente contemporaneo.
Caixa: Metal endurecido especial Vidia, aprox. 35,0 mm x 42,5 mm (lug-to-lug); 36,5 mm com coroa. Vidro de safira lapidado. Assinado na traseira: Rado – logo (Seahorse) – Water Sealed – DiaStar 8-625.0008.3 – numero de série. Coroa Assinada (logo).
Mínimos sinais de de uso considerando a idade; funcionando bem (vintage condition). Valor histórico, relogio com metal especial quase tão duro como diamante (v. Informações adicionais). Proveniência: Buenos Aires (colecionador). Preço de Referência: USD 800 – 1.200
Acompanha : Documento (nota official anterior) do antiquario
Caixa de luxo assinada Rado
DETAILS
Basic Info
Case material Tungsten
Condition Very Good (Worn with minimum signs of wear)
Scope of delivery Box, Previous Invoice
Caliber Rado 2798 404 (ETA 2789)
Case diameter 35 x 42,5 mm ; thickness 14 mm
Water resistance Yes, Not confirmed
Bezel material Tungsten Widia
Clasp Expansible deployant
Others Patented sliding bracelet (clasp); richly faceted sapphire crystal; sophisticated, hardened metal case
Functions: Quickset Day and Date (separate window). Separated seconds.
DESCRIPTION
Stunning Rado Diastar, cushion shaped, in the rare version that uses a highly durable, high-design, scratch-proof carbide widia case, a cutting-edge material technology of hard metal. High-end automatic power wind, Incabloc, with quickset day date dress luxury watch. All original, lovely classic style, with faceted cut glass crystal. Rado genuine stainless steel NSA bracelet with patented sliding clasp (18mm width). Harmonic dress watch that represents the better tradition of this swiss top brand (see additional information about the metal).
Richly signed high grade watch. It has the 1970s school inspiration, and its approach to design, which attempted to unify the principles of production with individual artistic vision and strove to combine aesthetics with everyday function. Overall, this is a beautiful, timeless watch with a nice history. Condition: bracelet and movement great, case and bezel perfect; some normal marks (patina) on the dial. Caseback in stainless steel.
Provenance: collector in Buenos Aires (it come with previous official invoice paper). Reference price: from USD 800-1200
Luxury box Rado also included. Please see photos for additional description.
Additional Information:
Hard Metal (also known as Widia, Cemented Carbide or Tungsten Carbide) is a material used in mechanical processing that consists of hard particles of Tungsten Carbide embedded in a metal matrix (often cobalt) thanks to sintering process; the fine powders of the components are mixed, pressed and then heated while maintaining a high pressure so that the granules of the powders unite to form a single piece.
The tungsten carbide cemented is the preferred material for all those parts that must withstand arduous any action such as abrasion , erosion , corrosion and metal seizure.
In addition to a high pressure force, resistance to deformation at high temperatures. These are physical characteristics that are particularly useful in metal cutting applications. It allows a long life to tools which, if made with other materials, would be worn prematurely.
This material was introduced for the first time, as a cutting tool, by Krupp (German steel industry) in 1927, with the registered name ” Widia ” (meaning wie Diamant – like diamond).
The Hardness is the physical property considered most important for practical applications. Although, it is not the only reason that has determined its business success, its resistance to abrasion is extraordinary.
The hardness values of Widia are expressed in terms of Rockwell “A” or Vickers values. In nature, the only material harder than this type of metal is diamond: only diamond is able to scratch the carbonate carbide. Silver and gold, in comparison, are much softer metals.
About Rado: is a “high range” brand of the Swiss watch conglomerate Swatch Group alongside Longines and Union Glashütte. It was founded in 1917 as Schlup & Co. in Lengnau, Switzerland, and began using the Rado brand in the 1950s. Today Rado is known for high-tech materials like ceramic (descended from Rado DiaStar series). The name meant “wheel” in Esperanto and was only used in international markets, beginning in South America and Asia before reaching Switzerland in 1963.
Rado was initially known for waterproof automatic models. The Golden Horse name appeared in 1957, with the water-resistant Green Horse brand added the following year. These featured seahorses on the back, two for a bayonet case back and three for a screw-down back. The brand expanded rapidly in the decade, with international sales in over 60 countries. Automatic Rado models featured a moving anchor logo on the dial, and this would become the symbol of the brand. Reminiscent of an automatic [[winding rotor, the anchor pivoted at the center and typically was placed on a red circle meant to evoke a jewel. Today, all Rado automatic models feature the anchor symbol.
One of Rado's most important and lasting products appeared in 1962. The DiaStar 1 was marketed as “the world's first scratchproof watch” thanks to a hardened steel case and a sapphire crystal. Over the next decades, Rado developed continuously the model.
The company's next innovation was the ceramic bracelet used on the 1986 Integral, followed by a ceramic case in the 1990 Ceramica. Another big advance was a diamond material with a hardness of 10,000 Vickers in the 2002 V10K. In 2011, the True Thinline was introduced, a 5 mm thin ceramic watch, and the similar HyperChrome.
The success of the DiaStar helped the company through the consolidation of the 1970s, with Schlup joining the General Watch Co. under ASUAG in 1971. By 1974, Rado was one of the top Swiss brands in terms of revenue.
In the 1970s and 1980s, ASUAG consolidated, selling most brands and merging with SSIH to become SMH, the forerunner of today's Swatch Group. It is one of the few companies to remain part of the group continually this entire time.Raro, classico na versão com metal duro como diamante. Swiss Made. Movimento automatico alta relojoaria, em ótimo estado. Design diferenciado (Caixa e cristal), linhas classicas porem absolutamente contemporaneo. Caixa: Metal endurecido especial Vidia, aprox. 35,0 mm x 42,5 mm (lug-to-lug); 36,5 mm com coroa. Vidro de safira lapidado. Assinado na traseira: Rado – logo (Seahorse) – Water Sealed – DiaStar 8-625.0008.3 – numero de série. Coroa Assinada (logo). Mínimos sinais de de uso considerando a idade; funcionando bem (vintage condition). Valor histórico, relogio com metal especial quase tão duro como diamante (v. Informações adicionais). Proveniência: Buenos Aires (colecionador). Preço de Referência: USD 800 – 1.200 Acompanha : Documento (nota official anterior) do antiquario Caixa de luxo assinada Rado DETAILS Basic Info Case material Tungsten Condition Very Good (Worn with minimum signs of wear) Scope of delivery Box, Previous Invoice Caliber Rado 2798 404 (ETA 2789) Case diameter 35 x 42,5 mm ; thickness 14 mm Water resistance Yes, Not confirmed Bezel material Tungsten Widia Clasp Expansible deployant Others Patented sliding bracelet (clasp); richly faceted sapphire crystal; sophisticated, hardened metal case Functions: Quickset Day and Date (separate window). Separated seconds. DESCRIPTION Stunning Rado Diastar, cushion shaped, in the rare version that uses a highly durable, high-design, scratch-proof carbide widia case, a cutting-edge material technology of hard metal. High-end automatic power wind, Incabloc, with quickset day date dress luxury watch. All original, lovely classic style, with faceted cut glass crystal. Rado genuine stainless steel NSA bracelet with patented sliding clasp (18mm width). Harmonic dress watch that represents the better tradition of this swiss top brand (see additional information about the metal). Richly signed high grade watch. It has the 1970s school inspiration, and its approach to design, which attempted to unify the principles of production with individual artistic vision and strove to combine aesthetics with everyday function. Overall, this is a beautiful, timeless watch with a nice history. Condition: bracelet and movement great, case and bezel perfect; some normal marks (patina) on the dial. Caseback in stainless steel. Provenance: collector in Buenos Aires (it come with previous official invoice paper). Reference price: from USD 800-1200 Luxury box Rado also included. Please see photos for additional description. Additional Information: Hard Metal (also known as Widia, Cemented Carbide or Tungsten Carbide) is a material used in mechanical processing that consists of hard particles of Tungsten Carbide embedded in a metal matrix (often cobalt) thanks to sintering process; the fine powders of the components are mixed, pressed and then heated while maintaining a high pressure so that the granules of the powders unite to form a single piece. The tungsten carbide cemented is the preferred material for all those parts that must withstand arduous any action such as abrasion , erosion , corrosion and metal seizure. In addition to a high pressure force, resistance to deformation at high temperatures. These are physical characteristics that are particularly useful in metal cutting applications. It allows a long life to tools which, if made with other materials, would be worn prematurely. This material was introduced for the first time, as a cutting tool, by Krupp (German steel industry) in 1927, with the registered name ” Widia ” (meaning wie Diamant – like diamond). The Hardness is the physical property considered most important for practical applications. Although, it is not the only reason that has determined its business success, its resistance to abrasion is extraordinary. The hardness values of Widia are expressed in terms of Rockwell “A” or Vickers values. In nature, the only material harder than this type of metal is diamond: only diamond is able to scratch the carbonate carbide. Silver and gold, in comparison, are much softer metals. About Rado: is a “high range” brand of the Swiss watch conglomerate Swatch Group alongside Longines and Union Glashütte. It was founded in 1917 as Schlup & Co. in Lengnau, Switzerland, and began using the Rado brand in the 1950s. Today Rado is known for high-tech materials like ceramic (descended from Rado DiaStar series). The name meant “wheel” in Esperanto and was only used in international markets, beginning in South America and Asia before reaching Switzerland in 1963. Rado was initially known for waterproof automatic models. The Golden Horse name appeared in 1957, with the water-resistant Green Horse brand added the following year. These featured seahorses on the back, two for a bayonet case back and three for a screw-down back. The brand expanded rapidly in the decade, with international sales in over 60 countries. Automatic Rado models featured a moving anchor logo on the dial, and this would become the symbol of the brand. Reminiscent of an automatic [[winding rotor, the anchor pivoted at the center and typically was placed on a red circle meant to evoke a jewel. Today, all Rado automatic models feature the anchor symbol. One of Rado's most important and lasting products appeared in 1962. The DiaStar 1 was marketed as “the world's first scratchproof watch” thanks to a hardened steel case and a sapphire crystal. Over the next decades, Rado developed continuously the model. The company's next innovation was the ceramic bracelet used on the 1986 Integral, followed by a ceramic case in the 1990 Ceramica. Another big advance was a diamond material with a hardness of 10,000 Vickers in the 2002 V10K. In 2011, the True Thinline was introduced, a 5 mm thin ceramic watch, and the similar HyperChrome. The success of the DiaStar helped the company through the consolidation of the 1970s, with Schlup joining the General Watch Co. under ASUAG in 1971. By 1974, Rado was one of the top Swiss brands in terms of revenue. In the 1970s and 1980s, ASUAG consolidated, selling most brands and merging with SSIH to become SMH, the forerunner of today's Swatch Group. It is one of the few companies to remain part of the group continually this entire time.
