A Grp. 7 size, with a chamber diameter of .95" at the rim. The pipe is unsmoked, properly drilled with the air hold at the bottom of the chamber and a cleaner flows right through stem and shank. For more information, please refer to the photos or, in desperation, me. I'll happily share my ignorance. (One more thing...look at the price for a new pipe of this caliber vs what else is out there with far less history of excellence. It isn't close, is it?
6.5" long, bowl 2.4" tall. Weight: 2.75 oz., 79 grams.