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| No. | Caliber | Length | Model | Serial No. | Manufacturer | Carriage | Service Dates | Notes | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 90mm Rifle | 50 Cal | M1 | 7046 | General Motors | Pedestal Mount, M3, #186, F B D | 1943-1946 | ||
| 2 | 90mm Rifle | 50 Cal | M1 | 7271 | General Motors | Pedestal Mount, M3, #258, F B D | 1943-1946 | ||
| Source: RCW Part 1, 5 Dec 1944, Coastal Defense Study Group, Berhow, Mark A. ed, American Seacoast Defenses: A Reference Guide, 2nd Edition, CDSG Press, McLean, VA, 2004, ISBN 0-9748167-0-1, pages 80-81 | |||||||||