You have what appears to be a large ring 1898 Mauser 98 that's been sporterized from it's military config via restocking, and adding adjustable sights and sling swivel bases, besides later D/T'ing the receiver rings for scope mount bases and altering the bolt handle to clear a mounted scope.
It's for sure a Large Ring M98, but since your pics of the front ring are unclear to me, the best way to tell a Small Ring from a Large Ring is to look at the left side receiver wall, just where the front receiver ring abuts it.
If the front ring is larger/fatter & stands out from the left sidewall, it's a Large Ring M98 - if the front receiver ring us flush with the sidewall, it's a Small Ring M98.
Many folks sporterizing military rifles were desireous of a light/handy rifle, and so chose lightweight accessories, like open sights and selected lightweight wood - sometimes even hollowing out/drilling the hidden areas of the stock wood to reduce weight.
I used to utilize an electric drill/bit on mine, ILO aluminum bottom metal, to "swiss cheese" the metal sides of the magazine well in order to lose a few more ounces.
It was only much later that users had these lightweight sporters converted yet again for scope use - D/T'ing, bolt handle work, etc, etc.
The eagle, etc are German proof marks.
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