![Rare 23 Jewel Ball Hamilton Grade 999N - The "Official Railroad Standard" Pocket Watch - The Pocket Watch Guy Rare 23 Jewel Ball Hamilton Grade 999N - The "Official Railroad Standard" Pocket Watch - The Pocket Watch Guy](https://www.thepocketwatchguy.com/wp-content/uploads/2020/08/Ball-Hamilton-Grade-999-c.1911.jpg)
Rare 23 Jewel Ball Hamilton Grade 999N - The "Official Railroad Standard" Pocket Watch - The Pocket Watch Guy
![Baltimore and Ohio employees magazine . For Time Inspection Service, HamiltonNo. 940 (18 size—21 jewels) and No. 992(16 size—21 jewels) are the most popularwatches on American railroads and willpass any official Baltimore and Ohio employees magazine . For Time Inspection Service, HamiltonNo. 940 (18 size—21 jewels) and No. 992(16 size—21 jewels) are the most popularwatches on American railroads and willpass any official](https://c8.alamy.com/comp/2CGRN5R/baltimore-and-ohio-employees-magazine-for-time-inspection-service-hamiltonno-940-18-size21-jewels-and-no-99216-size21-jewels-are-the-most-popularwatches-on-american-railroads-and-willpass-any-official-inspection-and-more-over-they-will-keep-on-passing-inspectionfor-years-and-years-write-today-for-the-hamilton-watch-book-the-timekeeper-it-pictures-and-describes-all-hamilton-models-and-states-prices-hamiltons-startat-1400-1525-in-canada-for-a-movement-alone-from-this-they-run-by-easystages-to-15000-for-the-hamilton-masterpiece-in-an-extra-heavy-18k-gold-case-hamilt-2CGRN5R.jpg)
Baltimore and Ohio employees magazine . For Time Inspection Service, HamiltonNo. 940 (18 size—21 jewels) and No. 992(16 size—21 jewels) are the most popularwatches on American railroads and willpass any official
![WTS] 46mm Hamilton Masterpiece Unitas 6498 Pocket Watch Conversion. Serviced and timed. 1st one I've seen. : r/Watchexchange WTS] 46mm Hamilton Masterpiece Unitas 6498 Pocket Watch Conversion. Serviced and timed. 1st one I've seen. : r/Watchexchange](https://i.redd.it/ft476g2onht51.jpg)