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From the American Horology Archive:
American Waltham Watch Co.

Grade: Colonial R

Mixed Run: 17-Jewel and 21-Jewel Movements

Manufacturer: Waltham ?
Manufacturer Location: Waltham, Massachusetts ?
Movement Serial Number: 32394572 ?
Grade: Colonial R ?
Model: Colonial R ?
Estimated Production Year: 1946 ?
Run Quantity: 5,000 ?
Grade/Model Run: 2 of 2 ?
Grade/Model Total Production: 15,000 ?
Variant Est. Production: 5,000 (12S-MCOLONIAL R-17J) ?
Size: 12s ?
Jewels: 17j Mixed Run ?
Movement Configuration: Openface ?
Movement Finish: Nickel ?
Movement Setting: Pendant ?
Plate: Bridge Plate ?
Adjusted: Yes ?
Adjusted to Position: Yes ?
Adjusted # of Positions: 3 ?
Adjusted to Temperature: Yes ?
Adjusted to Isochronism: Yes ?
Railroad Grade: No ?
Case: Various ?
Run ID: 25918.G2.12S1740.M4.O16111.P10638.17J3117 ?
Data Research: 1954 Waltham "Gray Book" List
NAWCC Waltham Serial Digest
?
Database Version: v52.978 ?
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Registry Population: Scoped for This Run Only: 16 (0.32%) ?
Research Note: Waltham Serial Ledgers designate this run as "Col." Waltham Serial Lists designate this run as featuring 17 Jewels. However, #32395512 has been verified as marked "21 Jewels." #32395300: Reported as 21-Jewels. #32398419: Verified as Marked "17 Jewels."