Wow, not sure how I missed this. Thats the 71st Savage 110 they built. They started the serial numbers on the 110's at 1000.

The first Savage 110 wasn't offered till 1958 but they started building them in 1957, thats why your date code is for 1957. I only have one more 110 made in 1957 in my data, serial 12XX.

Very nice gun!