Poland
Nicholas I of Russia gold 20 Zlotych - 3 Roubles 1835 СПБ-ПД, KM-C136.2, Gum-2554, AU58 NGC. Flashy and very appealing despite a couple of small planchet imperfections on the reverse. This St. Petersburg issue of the Congress Kingdom under Russian domination is scarce in this level of preservation.
Estimate: 2500-3000 USD