Russia
Paul I Poltina (1/2 Rouble) 1799 CM-MБ MS61 PCGS, St. Petersburg mint, Bitkin-51, Severin-2445. Obv. Cruciform crowned Imperial monogram with the date. Rev. Four-line legend in garnished tablet. Full mint brilliance, with a frosty reverse and a prooflike obverse. The obverse has noticeable adjustment marks, or the grade would be considerably higher than MS61.
Estimate: 6000-8000 USD