I have 2. One is not currently functional. Antique-broken flyer.
Hmmm, well I think I'd go looking for a flier for that one. I've been studying the structure of the wheels I have and others, and I think that if you have the basic wheel, you can probably find a flier to go on it. It may not be from the same maker, but I bet you could make it functional nonetheless. I've been talking with folk who took a flier and a sewing machine motor, mounted both on a little platform, added a foot control, and "boom" instant electric wheel. Also people who mounted a flier on an old sewing machine treadle's guts. Yours with a replacement flier would look much more traditional than those.
Hey, it'd be
fun to try, wouldn't it?