Half-ducat, 1665, Vilnius mint
John II Casimir Vasa (1648 - 1668)
Obverse: Twenty-seventh bust.
Lettering: IOAN • CAS • REX / • T • L • B •
Reverse: Monogram 
below crowned tenth Knight.
Lettering: MON • AVREA • MAG • D • L• 1665 / /
Identification
Ivanauskas, E. (2013). Coins and Bars of Lithuania 1236-2012 (Vol. 2). Kaunas: Author
number: 9JK4-4
Rarity: RRR (Not more than 20 pieces)
Main data
Denomination: Half-ducat
Value: 90
Currency: Groat
Year: 1665
Type: Regular
Minting
Mint: Vilnius
Minting type: hammered
Parameters
Material: Gold
Diameter (mm): 16
Shape: Round
