R-, John Casimir, Ort 1668, Bydgoszcz, hybrid with Leliwa, rare

A rare type of orta, however, both the portrait and the entire side of the coat of arms are consistent with the orta minted in Bydgoszcz with the Leliwa coat of arms, but here the Ślepowron coat of arms ( as listed on Onebid at the PDA auction https://onebid.pl/pl/auction/1060/lot/583/jan-ii-kazimierz-1649-1668-ort-1668-tlb-bydgoszcz ).