Much appreciated, Zod. I can take photographs of parts of the rifle as requested, and link to them from the hosting site, if that will help in its identification. I just searched Google for 'Mauser .22 repeater' which resulted in one positive:
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www.bedlans.com/new_page_1.htm

GERMAN MAUSER BOLT REPEATER, 22 L.R. CAL.,23 in. heavy bbl., 98% reblued finish, tapped for scope, stock has blank name plate, bore excellent, NRA good.........$495.
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That's not like my rifle. Mine has a dovetail type set up, no tapping is required to fit the scope. You just align the scope with the rails and tighten the knobs on the right hand side (which can be seen clearly, in the photo.) Regards, Andrew