Small gold coin around 2 grams. From matches first florin coins but back has "stemma dei Medici". And the 6 balls on shield coat of arms. Also "frieze" at bottom. Trying to determine date and if really medevil.
its Italian based-- The Medici's started in 1465 --from the house of "Medici"== likely from the "off shoot" family that were legally allowed to use the coat of arms known as the MARQUISES OF CASTELLINA --0TTAJANO (KINGDOM OF NAPLES) & DUKE OF THE CITY OF SARNO --the six balls -- thus the "stemma dia" (stemming FROM THE POWER TO COMMAND -MEDICI -- .THUS THEY WERE ALLOWED TO MAKE MONEY BASED ON PERMISSION GIVEN FROM THE MEDICI
oddly the word "frieze' is a term used for "decrotive" --so it might be a modern coy maybe
( Firenze ) as in Italian for Florence , Italy would make perfect sense ...--taking that into account -- looks like a very nice item --now tell us the how and roughly where of you getting it if you would -- we might be able to tell you even more if you do...