Blank 5p

Hi,

A friend of mine recently found, in a roll of 5p coins, a blank specimen: both its faces are blank, and the edge hasn't been milled either. The overall effect is that it looks rather like a lithium battery. This was of fleeting interest to me, not having seen something like it before, but I was just wondering if it would be of any value or particular interest to anyone else, or a certain group of collectors.

Thanks.

if real, it is a relatively (or very) valuble misstrike (black planchet)

perhaps you should contact a reputated and professional coin dealer round ya