No matter what the name is on old vintage mouthpieces, it is likely that 40% were made by Babbitt, 40% by Riffault, and 20% who knows? The name on the mouthpiece might be WWCo or Penzel Mueller or whatever, but the blank is likely a Babbitt or Riffault. That troubles some who claim that vintage mouthpieces were handmade using secret recipes. I suppose it's the same people who believe that their cookies are handmade by the Keebler elves. There is presently a revival of the (never ending) post about whether to give these haggard old beauty queens a tune-up or even change the tip opening.
I say give them a tune-up. First, the "original" lay isn't. Ebonite, like all rubber, deteriorates over time. The surface oxidizes, creating a soft layer that rubs off. A 1930's mp does not have exactly the same lay it had originally (unless unused, hermetically sealed, and stored in the dark). If used enough, it can still be black and shiney because the oxidation is regularly worn off. But an old hard rubber mouthpiece is no more "original" that the "original" rubber tires still on a 1930's car. The tires are junk. The old tires might be okay to look at. They might even hold air. Some may even claim to use them. A 1930 "original" sax mouthpiece is similar. The mouthpiece is likely useable but, like the tires, not likely suited for optimal performance. No matter for some as the incorrect claim of "it's original" is more important.
Second, the claim of original can almost never be supported. I thought my WWCo Meliphone Special was original. It was odd that it came in a Meyer Brothers box and even had a Meyer Brothers brass ligature. One day I noticed a faint stamp on the table. "Meyer Bros. 6". Oh no! Somebody had ruined my Meliphone Special by taking it to the Meyer brothers and having a different facing put on it. I never played it again. I'm kidding but the never ending post is by players who have no idea whether their "original" pieces are original. Clearly, back in the day it was okay for a player to have a "classic" mouthpiece altered to suit the player. You know, for playing. What a concept.