Denga (1/2 kopek) 1828, copper, weight - 3,41 g., size - 18 mm. Ekaterinburg Mint. Ruler: Nicolas I (1825-1855). Coins of this type were released at 1810-19, 1822, 1825, 1827-28.
Polushka (1/4 kopek) 1719, copper, weight - 1,02 g., size - 14 mm. Ruler: Peter I the Great (1682-1725). Coins of this type were released at 1718-1722.
Siberia. Polushka (1/4 kopek) 1778, copper, weight - 1,6 g., size - 18 mm, thickness - 1 mm. Suzun Mint. Ruler: Catherine II the Great (1762-1796). Coins of this type were released at 1764, 1767-79.
I have one of these as well! I love these big Russian copper coins, they feel great in hand, and have really cool edges also.
https://moneditis.com/2017/05/05/история-денежного-обращения-россии-ii-histo/ https://moneditis.com/2016/11/28/история-денежного-обращения-россии-historia/