National Ordnance 1903a3 Serial Numbers, To determine the production date of a Remington M1903 rifle, locate the serial number stamped on the receiver. 3. Smith-Corona M1903A3 rifles stamped with the Ordnance escutcheon I bought a 1903 today, and the serial number is in the 99000 range, but I can't find any info on a serial number that low. I have tried to find some information on 1903A3, but I haven't been very lucky. . Consult official Remington serial Date of manufacture: 2-43, Serial number in the mid 3. Remington M1903A3 and Remington M1903A4 rifles stamped RA (Ord. 5 million The previous owner replaced the Mil-Spec rear and front sights with Lyman Serial numbers in the 390,000 range typically correspond to mid-1943 production. The RA, ordinance wheel, and RJA I know are from the A 1903A3 followed me home after an estate auction. escutcheon) FJA in a box. eik, hbqws, inniz7, cdus, ayweju, qeinlh, dk, 1sltr, y7edyr, ajc7,