Medieval Italian States Or Savoy?

As always, great research, Bob!

I am not seeing that Sforza serpent at the top (only a small cross), but a lot of the legends are missing on that coin. Maybe a variant, or as you say, a copy?

I will try to find time for a dive into CNI Lombardy volume.

Hi Spence, Yes I can. It is 0,44 grams and 11 mm Diameter.
It looks indeed there are similarities. Wauw! You mean a copy like an imitation type based on the milan coin?
Like you have with Sterlings Bob , from Britain which are made here in Flandre and such.
Best,
Vincent

I think your coin is an imperiale of Francesco Sforza, second period (1450-1464), Pavia mint. The CNI reference is Vol.IV, p.507, #22.

The links posted by BobL show imperiales of the first period (1447-50). The obverse legend seen on all of these is (snake) COMES FRANCISCVS or similar

The imperiale of the second period has an obverse legend that starts with a cross. For this specific type, +.FR.DX.MLI.3C. (I think the 3C is an approximation)
The reverse legend would read +.S.SIRVS.PAPIE.
Both sides have a reeded circle (cerchio rigate) around the central design. There are other variants with different punctuation to the legends, and a solid line circle.

Since we can clearly see the cross, dot and what looks like an F on yours, as well as the reeded circle, I think this is the type.

There is a large weight range reported in CNI, from 0.35 to 0.75 g, which is consistent with yours having lost even as much as 25% of its mass to clipping (which is likely to have been the case to remove the legends almost entirely).