Hungarian, 17th century.
Ring size N 1/2 UK / 7 US (measured on the leading edge).
The bezel measures 1.4 x 1.4cm.
The high bezel is engraved with the image of a rearing lion and the shank is decorated with geometric foliate imagery.
A similar signet ring can be found in the collection of the British Museum, Museum number: AF.863.