It is a 11th/12th century coin. I have run across them in tetartera groups , I am not sure if they are found together but they are paired together because of size and
weight.
I checked the following to see if I could find any info.
Coinage of the Latin East
Metcalf ( Same as coinage in Balkans but updated and more plates.)
Coinage of the
Empire of Trebizond. Simon
BendallRattoCollecting
Medieval coins a Beginners Guide by Paul
TorongoCoins of the
Crusader States by Alex
Malloy ( Just the plates.)
I could not find a match, in any of these books.
I think it was related to tetartera but as an imitation of the currency but not a particular coin. Granted this is just an educated guess but if anyone else has any info it would be great to find out more.
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