Model D’s seem to come up fairly regularly, but it’s precdessor, the C, is a much rarer beast. There’s one on eBay that looks pretty good… somebody has a go with a  spray gun a few years ago, but it looks like it wouldn’t take much to get this open frame classic back to head turning condition. There’s some great period accessories that come as part of the deal… they’ll need a bit of tlc too, but you could end up with something truly unique. Check it out on eBay here

Here's the eBay link again