Winchester P-'14s were stamped W before the number and WRA.
The Eddystone factory was being set up as a locomotive works when the P-'14 contracts were let, so Remington bought it and produced there and at the regular Remington plant in Ilion. Winchester was supposed to have done the tooling for all three plants.
After the US discovered the Great War, the Eddystone plant built more than 1.3 million P-'17s (US Rifle, caliber .30, M1917 if you're from South of the Border) and was the largest manufacturer of that rifle, with Winchester and remington more-or-less tied at about half a mill each. At one point, the Eddystone plant was building 4,000 rifles a day....... and don't we wish it was still doing so?!
Great action, makes a wonderful sporter and they can be so accurate that you wonder why anybody bothered making anything else.