Vintage~~American Waltham Watch Co. ~~Pocket Watch w/Train encryption on back.
Here is a link to some research that has been conducted.
https://pocketwatchdatabase.com/search/result/waltham/5551960
| Manufacturer: | Waltham |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 5551960 | |
| Grade: | P.S. Bartlett | |
| Model: | 1883 | |
| Estimated Production Date: | October 1892 - June 1892 | |
| Run Quantity: | 1,000 | |
| Grade/Model Total Production: | 537,700 | |
| Size: | 18s | |
| Jewels: | 15j | |
| Jewel Material: | Ruby | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Pendant | |
| Plate: | Full Plate | |
| Regulator: | Patent | |
| Hairspring: | Breguet | |
| Adjusted: | Yes | |
| Data Research: |
c.1900 Waltham Factory Ledger Book 2 [NAWCC] 1954 Waltham "Gray Book" List NAWCC Waltham Serial Digest |
|
| Case: | Various | |
| Database Version: | v50.654 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 982.70 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 926.16 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 1.012% | |
| Registry Population: | 11 (1.10%) | |