Watch List notes:

The Portland Collection, World Coins, Russia, Nicholas I, 5 kopecks (2): 1838 СПБ НГ; 1853 СПБ НІ (KM.C163); Alexander II, 5 kopecks, 1873 СПБ НІ (KM.Y.19a.1), all certified and graded by NGC, the first as Mint State 61, the second as Mint State 66, the last as Mint State 64 (3)