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From the American Horology Archive:
American Waltham Watch Co.

Grade: No. 40

Mixed Run: Non-Magnetic, A.T.& Co.

Manufacturer: Waltham ?
Manufacturer Location: Waltham, Massachusetts ?
Movement Serial Number: 5739954 ?
Grade: No. 40 ?
Model: 1883 ?
Estimated Production Year: 1898 ?
Run Quantity: 1,000 ?
Grade/Model Run: 2 of 3 ?
Grade/Model Total Production: 2,500 ?
Variant Est. Production: 1,000 (18S-M1883-OGP) ?
Size: 18s ?
Jewels: 15j ?
Jewel Material: Ruby ?
Jewel Setting: Screw-Set ?
Movement Configuration: Openface ?
Movement Finish: Gilt ?
Movement Setting: Pendant ?
Plate: Full Plate ?
Regulator: Church 1885 ?
Hairspring: Breguet ?
Standard Dial Type: Double-Sunk ?
Adjusted: Yes ?
Adjusted to Position: Yes ?
Adjusted to Temperature: Yes ?
Adjusted to Isochronism: Yes ?
Case: Various ?
Run ID: 14307.G2.18S9523.181883M1430.O9603.P1060.15J3443 ?
Data Research: c.1900 Waltham Factory Ledger Book 2 [NAWCC]
1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
?
Database Version: v52.978 ?
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Registry Population: Scoped for This Run Only: 12 (1.20%) ?
Research Note: #5739561 Verified as Marked "Appleton, Tracy & Co." #5739954 Verified as Marked "Non-Magnetic."