I know this is a long shot but there is a vendor that I purchased something from that I do not remember the name of and what I purchased has missing parts. All I can tell you is the product is one of those laser cut dice boxes with d20 engraved on the locking mechanism/lever. I purchased the one where I need to assemble it myself, it came in a plain brown envelope with no markings on it whatsoever. This product was not one of their normal products and was a test run to see if they would sell. 

The part I am missing is the back piece to the box.  

Anyone have any ideas?