Man, Anybody here speak french or know how to navigate that page? I would buy that Musician in a heartbeat. There's a maniac on Reverb asking $2500 here in the states.
As for fretless Roadsters... not sure if you are only referring to lefties... but the tiny offset dots are almost always on the RS940 Here's a righty for sale:
https://reverb.com/item/28506119-ibanez ... 1981-black And a google search for RS940 shows most of them have the tiny dots. that's why I figured a lefty would too if it existed.
I've never seen any lefty factory fretless MC or RS series basses ever either.
Do you happen to know if the Ibanez guitars from this era used regular glue for their fingerboards, as opposed to epoxy? If so, it would be a pretty straight-forward mod to make one look like a factory fretless.