Photos: [https://imgur.com/a/OFlG1jh](https://imgur.com/a/OFlG1jh) Wrist shot: [https://imgur.com/a/ZDOHJ8e](https://imgur.com/a/ZDOHJ8e) Movement Pics: [https://imgur.com/a/PkiIeVi](https://imgur.com/a/PkiIeVi) Videos: [https://imgur.com/a/pIE7TQK](https://imgur.com/a/pIE7TQK) (half speed) Timestamp: [https://imgur.com/a/GsreNeT](https://imgur.com/a/GsreNeT) *Hamilton Watch Co. was in operation from 1892-1969 and manufactured some of the highest end, most accurate watches ever produced. Manufacturing of Hamilton watches took place at their facility in Lancaster, Pennsylvania.* This may be one of the most historically significant timepieces we have ever worked on—a Hamilton 917 without a serial number, among the last 917s produced on U.S. soil. By serial number records, 917 movement production ceased in 1954. However, during Hamilton’s transition to Switzerland, a small number of 917s were manufactured without serial numbers, marking a major turning point in watchmaking history as the American industry yielded to Swiss dominance.This particular piece, crafted at Hamilton’s Lancaster, Pennsylvania facility around 1956, is a tangible artifact of that historic era. The accompanying box, case, and papers confirm it was presented as a gift on February 29, 1956—two years after the last recorded 917 serial number. Inscribed to William D. Colburn by the employees of Connecticut Light & Power (now part of Eversource Energy), the watch symbolizes the twilight of nearly two centuries of American watchmaking.Converted into our 44 mm pocket watch conversion, this piece features adjustable lugs, gaskets for 50 meters of water resistance (though not recommended for water activities), and its original documentation. This extraordinary timepiece represents the final chapter of American horology as the last great American watchmaker transitioned to Switzerland. **Price**: $3,249, But absolutely negotiable—especially to someone with an interest in getting involved in vintage American watchmaking. **Case**: 316L stainless, 44 mm diameter, 47 mm lug to lug (52 mm with crown), 13 mm height, front/back sapphire crystals. Front, back, and crown gaskets provide 50 meters of water resistance although it is recommended to take the piece off before water activities. **Shipping**: UPS 2nd Day Air free in the USA. International shipping via DHL Express (\~$100), which takes approximately one week. **Payment Method**: PayPal, PayPal Credit, Venmo, Apple Pay, CashApp, Wise, Afterpay, Affirm, Klarna, and All Major Credit Cards **Service History**: The watch was serviced in 2025 and comes with a 1-year service warranty. The watch was inspected and cleaned. The watch was re-assembled and oiled using high-grade Swiss oil. Time keeping will vary depending on position. **About us**: We are a small batch, custom watch restoration company located in Central Arkansas USA. Our mission is to preserve and enhance vintage and antique watches. Everything we work on is done in house completely by hand. Each timepiece we produce is one-of-a-kind. Please follow us on Instagram at [https://www.instagram.com/frettcoclockworks/](https://www.instagram.com/frettcoclockworks/) Please like us on Facebook at [https://www.facebook.com/frettcoclockworks/](https://www.facebook.com/frettcoclockworks/)