thanks for the info, I checked gun broker and found one that looks exactly like mine.Go on gunbroker and check out Spanish Mauser. You'll find a lot of them there and you can get some idea. I noticed one for $275 that was a really good-looking one. That is a pretty high price for a 1916.
One thing you have going for you is that it is 7x57. Many are 7.62 Nato and subject to a lot of conjecture about ammo choice.
Going against you is the "bubba" factor.
I sold a very nice un-bubba-ed one in 7.62 about 2 years ago for $175. Had it been 7x57, I would have kept it.