Schuko plug

[PetrosA]

I don't think so. I cant find a reference right now, but I seem to remember that our 'ES' lamps don't have the same size thread as your US ones. The difference is only small & you cant really spot it by eye, but I'm sure they are different threads.

(I don't mean the SES or GES, these are easy to spot by eye)

Edit: Found it ....your US lamps are E26 (26mm dia thread) , our European ones are E27 (27mm dia thread) ref: Wiki

By mechanism I meant the way the threaded base of the lamp makes contact. Our lamp sockets here have a metal sleeve with the threads in it holding the lamp in the socket. If you reverse wired a socket so that shell is hot, you'd only have to get a finger in slightly to get zapped. In fact, some of the sockets used on table lamps or standing lamps are designed in such a way that there is an outside metal shell which could be grounded (depending on the age of the lamp) and the inside shell may even stick out further than that with only a cardboard sleeve as protection. If the cardboard breaks down and flakes away, it's entirely possible to touch the threaded sleeve while the light bulb is installed. It's a 100 year old design made worse by mass production and cheap manufacturing.

The Fos lamp I pictured was brought over from Italy back in the 80s, so I'm sure it has a European socket size, although our US size bulbs do fit it. The one lamp base which I know is different is the so called "European" base which is E14. We use E12 (candelabra) and E17 (intermediate) lamps here, so when a customer gets a light with an E14 base, we use adapters to reduce it to E12.