Watch List notes:

The Netherlands. Maasland. Otto III 983-996. AR Denar (18mm, 1.27g). Unknown mint in Western part of Netherlands. [+]OTTOGRADI[REX], bust left / S / COLON[II] / [A], Cologne monogram in three lines. Dbg. 340; Ilisch 35.3; Hävernick 163. Very Fine, flat spots.