Watch List notes:

Russia. Ryazan. Oleg Ivanovich (1369-1402). AR Kopeck (16mm, 1.36g). Struck ca 1380, Ryazan mint. Tartarian legends, with Ryazan counter mark / Tartian legends. Spasski Typ. 74/3-4 var. Very Fine.
Ex Numismatik Lanz Auction 151, lot 1200

Estimate: 100 EUR