I travelled around Europe a lot in the 60's mostly by thumb and seem to recall 127v in Paris, Luxembourg and Leningrad. The sockets were all 2 pin same spacing and same thickness as current CEE 7/16 plugs. I carried a homemade adapter consisting of a European 2 pin plug and UK BS546 2 pin socket for my shaver. The European plug had quite a thick case which stops it fitting in modern Schulko sockets.
The 127v circuit is pretty rare now due most are pretty much updated now.
However there is few spots still using it on old transfomer connection I know few area used that but now everything is wired for 415Y240v format
Merci,Marc
