Rolex oyster royal precision 35 mm plastic from 1975 with Plexiglas and mechanical movement, case number 1241...... and reference number 6427 with engine turned bezel and gray dial. Steel oyster strap with Rolex folding clasp. Replacement value approx. € 5000,-- Including a Rolex travel packaging. Has been fully maintained and checked for authenticity by former 25 year Rolex technician.