Russia
Catherine II Poltina (1/2 Rouble) 1766 CПБ-AIII, St. Petersburg mint, Bitkin-279 (R), Diakov-136 (R1), AU58 NGC. Well struck with abundant remaining luster and minor reverse planchet flaws. This is the only example of this rare issue certified in all grades by NGC.
Estimate: 5000-6000 USD