There are 6 blot-out variations of the 151 H.G. and this (170) is the only one with a smooth base. Only the two A letters and the small D are visible under the H.G.CO. line. Use "view original". A tiny clamshell chip where skirt meets base for only damage. Easily VNM. If you like blot-outs or embossing variations then put this one on your shelf for below book price at $10.00 + shipping. First email that says' "I'll take it.". No PayPal. Email with questions.