I just bought a large lot of parts from an estate sale and am slowly sorting through everything. I was told the owner passed several years ago, had a full fab shop in the back of his house, and apparently flat tracked Yamaha 650/500s, worked on Ferraris, and gun smithed; there was some pretty cool stuff.... Anyway, sorting through several stock '447' cams I came across the one pictured. I haven't had a chance to mic it yet but it definitely appears to have more lift and possibly more duration than stock cams. It has '25060-34' and '1-5' stamped in it as well as what appears to be '6ob', 'D', and 'ED' written on it in yellow paint pen. The '250' made me think it might a Megacycles grind as their XS650 cam models begin with that prefix, but after checking their catalog, their grinds stop at '25050'; they have no '25060'. Any theories or information would be appreciated, thanks.