Very rare hybrid of the 'three brothers' ducat from Brieg, minted with an obverse stamp from 1656.
Variety with the inscription FRATRE on the obverse and LIG on the reverse, without initials E-W of Elias Weiss on the sides of the Eagle.
In the specialist catalog 'Coinage of three brothers 1651-1662', by Marcin Grandowski, a variety with a rarity level of R8, which means 4 pieces known to the author.
Graded AU DETAILS by NGC. About uncirculated details but plugged.
Gold, diameter 22 mm