Watch List notes:

Germany. Cologne. Otto III 983-1002. AR Denar (15mm, 1.25g). Cologne mint. [+O]TTO RE[X], cross with pellets in each angle / S / [CO]LONIA / [A] G, Cologne monogram in three lines. Dbg. 331; Hävernick 34. Near Very Fine, usual flat spots.
Estimate: 80 EUR