You've definitely got a legit G29 so it should have a straight bolt. The mark on that bolt knob looks more like a C to me not a crescent moon like the Turks used. If you want to get the most money for that rifle I would put it up on Gunbroker since most WW2 German rifles have been going very high lately. Something rare like your G29 should bring some decent money. I think the overall rarity of the piece will counter the non matching bolt somewhat.
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