Watch List notes:

GERMANY

Deutschland, Cologne, Otto I (936-973), Denarius
Niemcy, Kolonia, Otton I (936-973), Denar

Awers: Krzyż, w jego ramionach kule, w otoku OTTO REX

Rewers: S COLONIA A

Srebro, średnica 19.4 mm, waga 1.38 g.

Grade: XF-
Literature: Danenberg 331

More photos and full item description available on auction site here