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There are two different Rebo organ spray ops across the Can/USA & Trilogo issues - gold and bronze. Not sure about Ledy - especially if you say the figs are def not Ledy and weren't mixed/matched? Stu (Burnsy) has a Ledy Rebo band, Dan as well I think, maybe they can confirm later. If you can post some pics in meantime.
thevintagetoyadvertiser.org 1970s and 80s vintage toy ads and other retro paperworks
imperialgunnery.com Vintage Star Wars action figure weapons and accessories guide