$275-$450, depending on EXACT model and EXACT condition.
50-200 USD or so
7.92x57mm, better known as 8mm Mauser. Same caliber as the German military's Mausers.
Depends on who did it, how long ago it was done, quality of the work, etc..
No sn data published I know of.
$15 to $40 depending on condition.
Unaware of any published sn data.
10-1000 USD or more depending on specifics
Probably Hamburg 1918, and probably a Mauser, but we need more information.
Can't be answered without a detailed description of ALL markings, condition, history, accessories, etc..
Depends on condition and originality. Anywhere from $100 to $275
No SN data published. Year of manufacture should be engraved on the crown.
I Have my grandpas and i would never sell it but i have seen prices go from 100 too 300 dollars depending on condition but if you had a german mauser 1500 dollars