Whenever you see a rondel dagger on an effigy it is always housed in a peculiar style of sheath. Rondel dagger scabbards have a sheath with a cup at the top of the sheath that receives the first rondel. The rondel closest to the blade should be sheathed along with the blade itself. Unfortunately, no one who commercially makes sheathes for rondel daggers makes them like this. Here's an effigy so you can see what they look like:
The book
Knives and Scabbards also documents an extant find.
Solution: MAKE ONE!
So this weekend while I was at at James Barker's home working on patterning for clothing, we decided to make a sheath for my A&A rondel dagger. We made it from 4 oz leather, and then basically did what you'd do to make a simple knife sheath molded leather around the rondel to form the cup and shaped it while wet to get it right. Then sewed it up, let it start to dry. James did the tooling work to match the design on the extant find, and then we dyed it and here it is (I may put a chape on it but am undecided):
