I've got one of your Bronze Medallions with another one of your attachments as well I bought 2nd hand from someone on eBay. The attachment doesn't quite fit the MK one for some reason (center pin seems slightly off by comparison), but it has its own that does fit. You can just see the 3 pins at the bottom in this photo. It's also the "right" medallion in the bookshelf display in the post above (by the lighter). The Acme medallion is the one on the left above.Yep, that definitely looks like one of my old headpiece attachments. Blast from the past.