Here is a pair of CD 251 NEGM's with patent date on the rear. They display fine, but the rear on both have problems. They have some nibbleing under the ears, some roughness to the sharp upper edge of the middle ring, and as you can see in the next photo, the each have a chip to the rear skirt that gets part of JUNE. The chips do not go through the skirt. They are aqua. The picture makes them look blue. I had these listed a few months back with no takers. I need to move these. How about $15.00 for the pair and that includes priority shipping in the U.S.