Watch List notes:

AUSTRIA, Holy Roman Empire. Archduchy of Austria. Friedrich III. Emperor, 1452-1493. AR Kreuzer (18mm, 0.75 g, 1h). Wiener Neustadt mint. Dated 1Ωヿ8 (1458). Four cruciform coats-of-arms / Elaborate monogram. Levinson IV-7a; Frey 99B; CNA Fa 36. Lightly toned, minor deposits, porous. Good Fine. Rare.

From the W. R. K. Great Lakes Collection of Early Dated Coins.

The first coin to use a modern numeral 9.