Oughtta be easy enough to find. I will mention that I had three different Celtic 135's MD mount. And I must have been a junk Celtic magnet. But all three of them were crap. ebay buys so maybe I got stuck. But three in a row. Even my luck isn't that bad. I ended getting a Makinon 135 MD and that was one of the best lenses I ever had for the Minny's.