I believe this to be a transitional Kar98b. Basically, it appears to have all the 98b features apart from a bent bolt handle, the scalloped recess in the stock for the bent bolt, and a K98k-style sling inlet in the buttstock.
In any event, it looks like a nice rifle. Congrats.
It does seem that way. But odd that, unlike most Mauser variants, there's very little info.
Oy, Cali-Steve: Made me look! But, no, only the usual German markings. Photos of that area to follow.