RR-, Jan Kazimierz, Szóstak 1662, Bydgoszcz, T-T, R6

A very rare sixpence from the Bydgoszcz mint with the letters T-T, type IV issue with the letters T-T, minted between April 1, 1662, and June 30, 1662, i.e. in the period between the closing of the Poznan mint, whose engraver, after moving to the Bydgoszcz mint, made the stamp for minting this coin (as evidenced by the author's stamp features), and the establishment of the Cracow general mint under the administration of Andrzej Tymf.