Martin 33 mouthpiece

I dunno if these are any good as mouthpieces...(great, good, mediocre, bad...??)
but some of us like to have o.e.m. mouthpieces to "go with" our vintage instruments (even if we don't "like" those o.e.m. mouthpieces).
https://www.ebay.com/itm/Martin-Elkhart-33-Tuba-Mouthpiece/153249398723
but some of us like to have o.e.m. mouthpieces to "go with" our vintage instruments (even if we don't "like" those o.e.m. mouthpieces).
https://www.ebay.com/itm/Martin-Elkhart-33-Tuba-Mouthpiece/153249398723