I would guess that after 60 years of use any speaker would age and not sound the same.
But in case of original Auratones they don't have 60 years, production of the original speakers ceased in the early 00s. After that the original company closed down.

A new company owned by Jack Wilson grandson opened some years ago as is doing some new speakers that are different than the original ones and have the Auratone name.

For me they don't work well enough and I would prefer to buy a used pair of original Auratone speakers if I didn't have them already.

If those new and different speakers work out for you that's fine.