I asked the seller if I could see a picture of the back and he said he could not, I then asked him where he bought it and he plied "eBay". I asked him if he would guarantee the authenticity and then he stopped answering my questions. He did mention that he did not like my "questions"
http://www.ebay.com/itm/1924-1st-Col...:X:RTQ:US:1123
I am guessing that it is not real and would not touch it with a 10 foot pole.