A real physical bitcoin! Congrats  
Since the value is in the coin it self, not in digital transaction like selling 'bitcoin certificate', you may be just about the only Bitcoin seller that Ebay can't touch.
If they still banned you... that's real douchebaggery.

In June, I tried and sold several Bitcoin certificates on Ebay.
I just got scammed in 1 occasion, by user 'jingkam'. Wipes out most of the profit.

Well, good luck!