Rare 1/4 thaler of John III Sobieski from Bromberg mint with overstrike in digit 7 in date.
Variety with initials M-H of Michael Haderman, administrator of Bromberg mint in 1671-1685 and with ending of the obverse legend PR.
Coin specified in Shatalin's catalogue as R4.
Firt year of 1/4 thaler of Sobieski.