Watch List notes:

Germany. Cologne. Otto III 983-1002. AR Denar (18mm, 1.70g). Cologne mint. [+OTTO REX], cross with pellets in each angle / S / IOIO / A, Cologne monogram in three lines. Dbg. 331 var; Hävernick 34. Fine, usual flat spots, weakly struck.
Estimate: 60 EUR