[jnicholasp]

50ties - Fifty-ties -- Fifties - 50s / 50's

[DominikR]

Thanks, English is not my native language. So what is correct, 50s or 50's?

[jnicholasp]

Yeah, I figured, no worries. Your English is excellent, apart from this little oddity. Either way to put the 's' is fine, really, but I think with the apostrophe (50's) is more common.

[DominikR]

Thanks a lot! Very kind of you.