Watch List notes:

RUSSIA, Sub-Principality of Serpukhov-Borovsk. Simeon Vladimirovich. 1410-1426. Fatasy AR Denga (15mm, 0.85 g, 9h). Warrior standing facing, holding sword and shield; CEMEN in legend / Legend in Arabic citing the Jujid (Golden Horde) ruler Toqtamish. Cf. Kaim, p. 168 (for rev.); D.P. Sontsov, inтруды московского археологического общества (Transactions of the Moscow Archaeological Society) IV.2 (1874), pp. 73-4 (this coin referenced and illustrated). Toned. VF. Very rare.

Ex Heritage Auctions Europe (22 May 2017), lot 7253; Quentin Archer Collection (Baldwin's 83, 24 September 2013), lot 4726; W. Fuchs Collection (Part III, Sotheby's, 24 April 1997), lot 200.