Pocket Watch Database

Seth Thomas Size 18s Model 1: Overview & Production

Model 1 Features

Seth Thomas Model 18s 1 Diagram

Movement Diagram

Seth Thomas 18s Model 1 Sample Image

Example Image

Seth Thomas 18s Model 1 Dial Plate Image

Dial Plate Image

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.
Size 18s
Configuration Openface
Plate 3/4
Setting Lever
Finish Gilt
U.S. Patents 310865, 325568
Model 1 Image Gallery

Model 1 Production

Total Production: ~10,900
Est. Production Years: 1885 - 1886
Earliest Serial: 1
Latest Serial: 10,900
Runs: ~10
Smallest Run: 50
Largest Run: 4,800
Distinctive Grades: 3

Model 1 Production Segments

Model 1 (All Variations): 10,900 ETP
Gilt: 10,900 (100.00%)
Openface: 10,900 (100.00%)
Lever: 10,900 (100.00%)
11j: 10,650 (97.71%) 15j: 250 (2.29%)

Model 1 Technical Specifications

Movement Thickness (with dial): 8.82mm
Pillar Plate Diameter: 45.67mm
Core Diameter: 42.66mm
Weight (with dial and hands): 57.39g
Measurement Notes: Weight taken without hands.

Note: Measurements may vary slightly depending on features, style, and time of production.

These measurements were taken on movement #928.