Potin Unit Curved Bull / Holman B4

The Cantii occupied what is now Kent, and their potin coinage represents some of the earliest indigenous struck — or more precisely, cast — currency in Britain, predating the Roman invasion by well over a century. Potin itself is a tin-rich bronze alloy, and these pieces were almost certainly cast in strip moulds rather than struck, which explains the characteristically rough surfaces and irregular flan shapes that distinguish genuine examples from later imitations.

Holman's classification system subdivided Cantian potin into fine typological groupings based on stylistic degeneration across generations of copying. The B4 designation places this piece within a specific phase of that sequence.