M. C. Gregory, Los Angeles
Model A
"4A" "18"
Serial Number 8111

I measure the tip opening at 0.065"

SOLD

Here is a sound sample of this mouthpiece (click the "Play" button) recorded March 4, 2011:

This is a great-playing alto mouthpiece.
Are you looking for the lyrical Paul Desmond sound? Cool and dry like a Martini?
This is the mouthpiece for you.

Brass Ring on the shank.

There is flaw at one of the front corners of the beak, but the tip rail and side rails are unaffected.
I took extra photos.