I’m not even sure which is the correct way round in which to view this coin, so you may need to rotate it (sorry!).

Side 1 is dominated by what looks like a Lombardic M, with other vague shapes adjoining.
Side 2 has a long rectangular shape (A) about 9mm long, at one end terminating with a wider transverse rectangle (B) with long strands running alongside (A). The combined AB shape might represent a standing figure (with B perhaps representing the shoulders?); or an axe (B might be the axe-head?); or a sword-hilt (with B representing the sword’s guard); or something entirely different. And once again, I’m sorry to sound so vague.
On the left side of the Side 2 image is either a loop (a handle of some sort?) or perhaps a human arm raised in a V-shape.
Side 2 has 2-3 faint letters to the left of shape
The metal looks to be either copper or bronze, and weighs about 4.23 gr. Because it is more rectangular than circular (which made me think about Spanish cobs!), this coin - or coin fragment - measures approximately 23x18mm.
Thanks.
green153