I had the same rifle in a Eddy stone version originally they were under contract to make them in .303 for the British and when the contract was almost complete the us was going to getting into the war and needed a bunch of rifles and didn't have enough 1903 Springfield's so they changed the too!ing to 30-06 and went to war with them.
More of the 1917 enfield rifles were used in WW1 then 1903's. They were regulated to second line troops,national guard,army reserve and lend lease programs in WW2. That's what I researched and semi remember.
So!d mine and a few others to buy a boat. In original uncut stock I'd guess value at+/-$600-$800. Mine was original except the stock was cut up value was about $350. I researched buying a stock and restoring it And just stocks were $250-$350 on gun broker.
My advice is if its original keep it that way,shoot it with your kids and pass it down to the next generation. Original milsurps are great range guns. Wish I had kept the half dozen I sold but had to sacrifice a little to get my boat.