Vintage Holton Collegiate Trumpet Mouthpiece

Description

Here I have an Holton Collegiate trumpet mouthpiece.
Stamped:
COLLEGIATE-BY-HOLTON.ELKHORN.WIS.
There are no other designations on there (numbers or letters)
Definitely collectable piece, could be made playable if plated (entire piece is raw brass)
To me the piece feels larger than a 10-1/2 but smaller than a 3C
(but my face is not your face so who can really tell)
There are scratches and dings on the playing surface of the rim and drawer dings on the body. There is also some plier marks on the shank and a crack in the end of the shank (see 3rd photo)
None of these affect playability though (except you don't want raw brass on your face for any extended period, so get it plated).
I think it's cool enough to put in the shadow box of mouthpieces I have, however I'll give it a shot here first.
Throat is a loose #27 (plating would tighten that up)
Buyer to pay .95 in shipping (USPS Priority Mail)
Shipping to US destinations only!
Thanks for looking!