I've been contacted by the parish church at Melverley in Shropshire. They have what appears to be an intriguing liturgical artefact, found in the half-timbered wall of the church during conservation. It's shaped like a small bread shovel, about a foot long, but with a cross in circle device at the end of the handle. They wonder whether it could have been used for distributing the holy loaf, but it looks a bit small for that. And probably too plain to be a pax.
I have photos which I can forward off list.