I'm not sure the "test of time" is relevant here.
Many panel schedules are unreadable after a few years.
Even this panel has had two changes to it since the pic was taken...less than a month ago!
Finally, only with the lable ON the breaker can you ID the breaker when the cover is off for servicing, and keep track of it as you shift thing around.
Look at that panel schedule....just how well can you ID the breakers on it, even in just one language?
