That old thing?? You don't want that thing..
PM me and I'll take it off your hands.. Those old things are icky and you don't know where it's been..
Mauser 98K Unofficial Web Site. has a list of codes for Mausers and it looks like your's was made in 43 at Steyr-Daimler-Puch AG, Steyr
bnz 145 8233 8233 1943 Steyr-Daimler-Puch AG, Steyr, Austria
The first is the code, the second is the starting S/N, the third is the final S/N, and the forth is how many were made..
Small batch of rifles, numbers match.. Not only is it a fantastic family herloom, but it's more than likely worth a few bucks, too..
I'll give you $17.84 for it, but you'll have to pay for shipping..
Fantastic gift from your Grandmother.. Make sure you take her to a very nice lunch.. Grandmothers like that sort of thing..
I found this, too.. Compare pics and condition to yours, and he's asking $500 for his..
GunsAmerica - WWII German Mauser bnz 43 Nazi proof marks - Mauser Rifles > German
More info..
bnz 43 Single Rune: didn't buy IT, but I DID buy