I recently restored this GBD Concord 789. It has a huge bowl. I don't know the number system for bowls, but it makes my #6 look small. 1" diameter. It's in near mint condition. There is the lightest chatter on the stem. Seriously barely noticeable. It's in fantastic shape, especially for a 30 some year old pipe. Since my TAD and PAD are shut down till after Christmas, I'll take either flake tobacco or a pipe with a smaller bowl. I'm figuring a number 4 or 5. I posted the restoration pics, but here are better pics. Sorry I didn't resize, I wanted them as big as possible to show detail.