Edward IV 1st Reign Light/Heavy Groat Unrecorded Mule

Edward IV 1st Reign Light issue groat.

London mint.

Obverse is from light coinage dies with 19mm inner circle diameter. Reverse is from old, heavy coinage dies with 20mm inner circle diameter. As such, an unrecorded mule.

Exceptionally rare. Possibly unique.

Spink 1996/1995. B&W type Va5.