Here is my most recent eBay win. I know these can and are faked, but I couldn't resist going for it. Could it be 65L??? The bottom of the stamp shows traits of B Relief. There are signs of possible re-engraving over the upper X's and the Top line. The top line re-engraving does not seem to be identical to the line shown in Neinken's book, but compared to certified #16 65L from PF database (latter 2 stamps), it matches pretty well--including the bruise over the right X.