This Ithaca M1911A1 was shipped to the Supply officer at the Naval Supply Depot in Oakland, California on February 17th, 1944 in a 7,500 gun shipment. This pistol was in the same shipment as 12647734 that can be seen here.
The inspector stamp of FJA is for Colonel Frank J. Atwood. He was the Army Inspector of Ordnance at the Rochester Ordnance District from June 15th, 1942 to March 31st, 1946. He would inspect the total production of the M1911A1 pistols manufactured by Remington Rand and Ithaca.