The coin is a Huszár 717,
Pohl 216-7,
Unger 562g, Réthy II 235A,
Kaplan Subtype B. It was struck in Hermannstadt (formerly Nagyszeben,
Hungary (Translyvania), now Sibiu,
Romania) by
Thomas Althemberger, kammergraf, in 1468 (
per Pohl).
I am not surprised that you haven’t encountered another coin with this exact
obverse legend. Matthias’s Madonna denars were struck with numerous
legend variations, and no compilation of them has ever been published.
I have seen very few Huszár 717s struck at Hermannstadt; so few that I could not make any tentative generalizations about them in my
Celator article. I am attaching images of two others – one from my personal
gallery, and the other from a Hungarian dealer’s website. As you can see, your coin and these others have a number of traits in common: (a) the
style of the lettering is more elaborate than is typical at other mints; and (b) all three coins have odd/erroneous
obverse legends. Note that the first coin (mine) bears the
legend M MAhTIE • R • hVGARIE (the h and the T are transposed in MAThIE; and the n is missing in hVnGARIE). In the other coin, the orientation of the letter h in MAThIE is retrograde.
I recall seeing very few Huszár 717s with a rosette as
part of a
legend, and only recall seeing this feature with respect to coins issues at Kaschau (Kassa in Hun., now Košice, Slovakia). Your coin is also unusual due to the angle of the Infant’s
head on the
reverse.
Steve