Ive been down that road Jim via the net and a couple of airgun collectors in the States who, while obviously hearing of and owning several of the Wischo rifles, of various models, had not heard of a model 65!
Weihrauch also manufactured version of the BSF models for Marksman including models 28,40,55, 56,58 59, 70, 71, 72 and 75 but NOT a 65.
Very odd.
ATB
Ian