Pocket Watch Database
Seth Thomas Size 18s Model 12: Overview & Production
Model 12 Features
Movement Diagram
Note: Diagrams and photos displayed are intended to serve as a represenation of this model.
Plate cut, finishing style, jewel count, regulator, and other features may differ between grades within the same model designation.
Plate cut, finishing style, jewel count, regulator, and other features may differ between grades within the same model designation.
| Size | 18s |
| Configuration | Openface |
| Plate | 3/4 |
| Setting | Lever |
| Finish | Gilt or Nickel |
| Jewels | 7j |
| Notes | New Century Series |
| Model 12 Image Gallery | |
Model 12 Production
| Total Production: | ~294,000 |
| Est. Production Years: | 1898 - 1910 |
| Earliest Serial: | 1,000,001 |
| Latest Serial: | 4,070,000 |
| Runs: | ~39 |
| Smallest Run: | 1,000 |
| Largest Run: | 69,000 |
| Distinctive Grades: | 4 |
Model 12 Production Segments
| Model 12 (All Variations): 294,000 ETP | ||
| Two-Tone: 25,500 (8.67%) | Nickel: 251,500 (85.54%) | Gilt Damaskeened: 17,000 (5.78%) |
| Openface: 294,000 (100.00%) |
| Pendant: 247,000 (84.01%) | Lever: 47,000 (15.99%) |
| 7j: 284,000 (96.60%) | 15j: 10,000 (3.40%) |