I got them from a seller in the Netherlands on the Bay. You can search for old auctions of rossin and it'll be on there. He has one more like mine in white in his store, and he has some more modern styles (which are less rare, reproductions I think... like the ones banana_brain used to sell. Could be wrong).
There's a ghibli frameset also on eBay that could be like yours. It looks a little more modern than mine. Any chance you could post a detail shot of one of the lugs so I can see what the paint quality and thickness is like?
Good tips on paint! Glad someone on Earth knows about these things.