Dinar - Stefan Radoslav

This is probably one of the first examples of Serbian medieval coins

It has great Byzantine influence:

Obverse is same as on Byzantine coins but text is on Serbian is completely different and Byzantine obverse doesn't have titla ( ҃) it has MX and text is visibly Greek

On reverse it's Jesus Christ who was on both Byzantine and almost all Serbian coins

but text is written in reverse which is never the case with Byzantine coins:

XC IC - IC XC

Also one interesting thing is that both Byzantine and Serbian coins were minted in same mints so that's also reason why coins are so similar

Probably minted in Ras or Thessalonica