Hi there,
As Janx has pointed out there is no character named Meccano - but there is a toy construction set that was created by Frank Hornby in 1908 (in Liverpool, England). The toy is basically "small scale mechanical engineering" where you assemble models using metal and plastic parts (beams, girders, pulleys and wheels etc) and screw/bolt them together with miniature tools. The toy itself is called Meccano but the name has become a sort of Trade Brand in it's own right (like NERF is owned by Hasbro). Meccano was also manufactured by a French sub company "Meccano France SA" who are probably responsible for releasing this set of Star Wars action figures to the French speaking market in 1979 and repackaged figures made by the Airfix Model Company that owned the British Meccano part of the business.
This figure is "The Death Star Commander" figure (Le Cdt = "The Commandant/Commander"...Le E'toile Noire = "of the Black Star/Death Star")
I think my French translation is correct, if not my friend TheVintageToyAdvertiser who is a French citizen and expert on classic toys will de-friend me!
You can check his blog and Star Wars posts here:
https://thevintagetoyadvertiser.org/star-wars-adverts/You might find some interesting stuff including a Japanese Darth Vader figure made of metal!
P.S. Just out of interest Meccano is now owned by "Spin Master Ltd. Canada" having acquired the company in 2013.