You are bidding on a Yashica YASHIKOR  AUX Telephoto & Wide Angle 1:4 LENS ADAPTERS Japan Electro  H.   I inherited these items and know very little about it.   I have not tested or cleaned the lens besides wiping off the dust.   I repeat I have not tested it.   Lens appear to be in good used, not abused condition.  Both of the lens do have a ding/bend in the metal rim(I have not tried to straighten them)(pictured).  Please see all the pictures and ask all questions before the close of the auction.  I only ship to the lower 48 states.  Happy Bidding!