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The problem is that as you go up there not so cheap,even on e-bay,unless you get lucky,and as for Thiers Issard I havent even seen them except for one model the Sparticus maybe?...

If you look it up ,if it still exists,as it might have been rubbed out by this form,a professor in San Diego preformed a long and complicated computation the perfect number is 735,why?? I don't...