You are bidding on an official Kentucky Derby error glass.   Very rare.  Entire glass is supposed to be frosted but as you can see from the pictures the frosting is only on parts of the glass.

This glass is over 45 years old and in great shape.

This is a one of a kind glass.  Add it to your collection.

Please note that you are bidding on the glass on the right when the picture contains two glasses.  

Please let me know if you have any questions.  Happy bidding.