New to me meer arrived today, by way of Bollito. It’s not marked so no idea who made it. Must be fairly recently made though, it has a chamfered delrin tenon and a delrin sleeve in the mortise. Draw is a little tight but perfectly workable. The draft through the stem is a straight shot with no step downs so the draw is a function of the diameter rather than any kind of obstruction or pinch point at the slot.