Here is a special cutting board made by A.Heirloom.  Check out the website which is burned on the back side.   www.AHEIRLOOM.com .   Measures -  12 1/2" top to bottom,  11 3/4" left to right,  and 3/4" thick.  This isn't just a cutting board, see photo #3 and #6 , and it is made from organically grown Bamboo.   There seems to be a faded place on the front side, maybe it was stored with a paper or cloth on it, that removed some of the oil.  Should be fine once it gets some olive oil on it.  I don't believe that it has ever been used.  It has no knife or cutting marks at all.  Excellent condition!