William E. Harpur

Name: William E. Harpur Silver 1851 United States | Watches & Fine Timepieces | Lot 12140
Brand: William E. Harpur
SKU: 13540031
Availability: OutOfStock

Description

William E. Harpur, Philadelphia, Rare Early American Detent Chronometer, circa 1851

William E. Harpur, Philadelphia, Rare Early American Detent Chronometer, circa 1851 Case: 55 mm, hallmarked sterling silver, later English hallmarked case, belted crest on the back, inner bezel and display glass Dial: enamel, signed, Roman numerals, sub seconds, gold butterfly hands Movement: No. 528, signed Wm. E. Harpur, Philadelphia, gilt 3/4 plate, full jeweled, free sprung balance with helical spring, diamond end stone

Reports

Oct 2025

EveryWatch Q3 Secondary Market Movements Report

The EveryWatch Secondary Market Movements Report Q3 2025 captures a pivotal quarter for the global luxury watch market. Despite new U.S. tariffs and retail price hikes, the secondary market expanded +23.8% as collectors sought value, trust, and liquidity. Europe surpassed the U.S. as the largest resale hub, Asia surged +43% in total value, and independent brands such as F.P. Journe, H. Moser & Cie., and Laurent Ferrier achieved record turnover. Rolex, Patek Philippe, and Audemars Piguet maintained dominance, while Certified Pre-Owned programs doubled sales year-over-year—signaling a confident, value-driven era for modern collectors.

Oct 2025

Patek Philippe Nautilus Full Market Guide

This report analyzes 47 iconic Patek Philippe Nautilus references by comparing secondary market prices, auction results, and long-term value performance.

Oct 2025

Investment-Grade Watches Under $25,000

This report is designed to help collectors discover the smartest investment watches under $25,000. Whether you're growing your collection or making your first serious purchase, we've selected standout timepieces that offer both strong value and long-term potential.