I believe it is definitely a
Denier Tournois type, with the tower of the castle oriented about 10 o'clock in the left picture. Quite of
bit of "
ghosting" from the
cross on the
obverse disfigures much of the detail of the
reverse (the castle
side). A device of three lines appears below the castle.
If I am correct this would be Frankish
Greece, Achaea, John of Gravina (1318-1333 AD). Legends are blurry, but if I
had to guess I would say that it is Coins of the
Crusader States (CCS) 55 or 56. Both of these issues have an ornate "M" below the castle. It's just possible that on your example the
ghosting disfigures the top of the "M", making it appear as three vertical lines. CCS 55 has pellets on either
side of the castle, CCS 56 has annulets on either
side of the castle. I would say that yours appears to be annulets, making it CCS 56.
Just skimming through
Roberts "The Silver Coins of
Medieval France, 476-1610 AD) for issues of Royal
France and Malloy/Preston/Seltman "Coins of the
Crusader States, 1098-1291 AD), I do not see any
Denier Tournois issues that better match the general outline of the
legend. I may certainly be missing something.
https://www.acsearch.info/search.html?id=5198991Eugene