The letters/pellets in the corners are not very clear, but I could easily interpret them as four B's, a
reverse type that was used in
Lesbos by the Gattillusio dynasty at Metelin (see
Schlumberger plate
XVI) and at other locations. But I can't find anywhere that this
reverse type was coupled with a
lion obverse.
The
obverse type with the
lion rampant was used extensively in the
Low Countries, and some early 15th century issues even
had letters in the quadrants of the
cross (gros cromstert or kromstaart). But they were large coins, and they were made of
good silver. The corresponding quarter-gros issues
had on the
obverse a
lion within a
shield, which is entirely different from yours.
My best guess is that your coin is a
counterfeit cypriot carzia from around the time of
James II (1460-73). But that's just a guess...
Regards,
Jim
