TromboneChat

I have two Conn-Innes mouthpieces which are quite different from each other.
I have no idea if either has been modified. The one on the left is larger in most dimensions and has a rounder rim. It has a shank that fits a modern small bore tenor receiver.
The one on the right has a wonderfully flat rim and fits the receiver on my 1919 conn peashooter (basically a 2h just before it was branded as such). It also fits well in a 50s Olds Ambassador receiver.

I really like this one on the right.
What do people think of these mouthpieces?
Were these variants produced at the same time or sequentially?
Any opinions on any other mouthpieces from the teens or twenties?
I would like to try the CONN-PRYOR
Has anyone compared the Innes to the Pryor?
Thanks

Whoops. Did not mean to post this in classifieds.

OK. Moved to Mouthpieces.

Do either of your Innes mouthpieces have a sharp step between the rim and the cup? I have one that does. Almost like somebody tried to pull the rim off the bowl.

The smaller shank was common in instruments from the early part of the 20th Century. I have a couple of unbranded ones with similar shanks.

I use "4" sized mouthpieces (Bach or Wick parlance) and as such the Innes is WAY too small for me. But in its day it was quite popular.

Thanks Bruce!
No, no step visible.

Those look surprisingly like some Griego designs on the inside and out.