During my stay in Budapest I also paid the Magyar Elektrotechnikai Muzeum a visit, an incredible collection of electrical related items from the very first experimental generators to transformers and railway equipment.
They also show a huge display of histric light switches, receptacles, bell buttons,...
Some of the oldest switches, around 1880-1900 I guess, were clearly similar if not identical to the US push button switches of those days.
It sounds not all that unlikely there might have been a US influence, after all, Budapest was partially electrified by the "Austrian Edison Company". The other part of the city was at the very same time electrified by a different company using AC...
The museum itself is located inside a former rectifier substation, later transformer station.
I do have pictures, but I'm afraid I can't publish them on the internet for copyright issues.
