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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/seth-thomas/286573
Access Date: June 07, 2023
From the American Horology Archive:
Seth Thomas Grade 159 Pocket Watch
Seth Thomas Watch Co.

Grade: 159

Private Label(s) in Run:

Workingman's Friend - Siegel Bros. - Boston, Mass.
Workingman's Friend Siegel Bros. - Boston, Mass.

What is a Private Label?
Manufacturer: Seth Thomas
Manufacturer Location: Thomaston, Connecticut
Movement Serial Number: 286573
Grade: 159
Model: 5
Estimated Production Year: 1910
Run Quantity: 100
Grade/Model Total Production: 10,750
Variant Est. Production: 1,500 (18S-M5-15J-OTL)
Size: 18s
Jewels: 15j
Jewel Setting: Screw-Set
Movement Configuration: Openface
Movement Finish: Two-Tone
Finish Pattern: Gold Ring
Movement Inlay Color: Black
Movement Setting: Lever
Plate: Full Plate
Regulator: Micrometric
Hairspring: Breguet
Standard Dial Type: Double-Pressed
Adjusted: No
Railroad Grade: No
Movement Markings: [Private Label]
15 Jewels
Safety Pinion
Case: Various
Database Version: v50.869
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration		 31.24
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration		 100.00
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration		 0.794%
Registry Population: 2 (2.00%)
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Production Metrics Tree: Grade 159

Target Profile: 18S-M5-15J-OTL-U

Seth Thomas Grade 159 (All Variations): 10,750 ETP
18S: 10,750 100.00%
18s, Grade 159
18S-M5: 10,750 100.00%
18s, Grade 159, Model 5
18S-M5-15J: 10,750 100.00%
18s, Grade 159, Model 5, 15 Jewels
18S-M5-15J-OTL: 1,500 13.95%
18s, Grade 159, Model 5, 15 Jewels, Openface/Lever/Two-Tone 		Other: 9,250
Other Configs or Unclassified
18S-M5-15J-OTL-U: 1,500 13.95%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 286567 #67 Observation
Private Label: Workingman's Friend Siegel Bros. - Boston, Mass. 		April 23, 2014
2 286573 #73 Observation February 04, 2023
Standard Deviation of Known Examples: 4.24 (Expected: 29.01, Δ24.77/24.77%)

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Seth Thomas Grade 159 Pocket Watch