I have been looking to pick up a Minolta 135/2.8 with 4 elements in 4 groups. It is said to be the best of the Minolta 135's and have also to be quite close to the Elmarit 135 of the same era. I was on a forum not long ago and noticed form a graphic posted in the discussion that the 4/4 version of the 135 could be identified by the little diamond marking above the aperture ring where all other versions use a little white circle. fast forward a few weeks and I notice an eBay seller (Henry's Cameras) with a Minolta MD 135 PF yet the image sure looked like the 4/4 version. The 4/4 versions typically command a much higher price than other versions of the Minolta 135's. After doing some research I came to the conclusion that the eBay ad was the 4/4 version but mislabeled. I ended up with the winning bid of $31 and it arrived today. It is indeed the 4/4 version and it is in immaculate condition. Moral of of the story? It pays to do a little research. I can't wait to try it out.