Nicely preserved details.
Very rare St. Petersburg issue minted in an edition of 28,000 copies.
Item known from sporadic auctions.
Obverse: eagle of the Empire, in the rim the legend:
МЕДНАЯ РОССИЙСКАЯ МОНЕТА ПЯТЬ КОПЕЕК;
Reverse: in pearl border: *5*/КОПЕК/C.П.Ь, in outer rim wreath and date 1870 ГОДА;