These are the caps I've got in stock.  Of course, if you have a favorite cap you can mail it and I'll use it to make your mirror.  The best way to get a bottle cap off without bending it is to put a quarter on top of the cap, then pry it off.
 
(No, those cheap sunglasses shown in the pictures are not for sale)

On the order form simply request the beer cap of your choice and the block number.
   Be sure to include a 2nd choice.   Example: Heineken A8

Please contact me with any questions at    
gabman98@yahoo.com