I second all of this. The piece is amazing (I think I remember seeing it on ebay).
Ooh boy , that one came out pretty cool Dario.
Yes the Nice aviation poster was indeed on eBay, first sold in France for less then 150 euro (if not mistaken) I had it on my watch list, it was poorly listed so sold very cheap.(didn't dare to bid on it due to state)
Then it went to a vintage poster galley guy form Uk and was relisted for a whopping 3000$ or so BIN.
Not sold and after I few times relisted as regular auction sold around 1000 euro .
Normally they sell around 10000-14000 at auction. (PAI, Swann,...) so probably still a good investment.