I just bought an HVY-stamped bong. The glass seems REALLY thin/brittle at the sides of the beaker-bottom. She's CCG and has a diffused downstem with an ice catcher. Yes, she's a GonG The picture below, back-right corner: http://img340.imageshack.us/img340/1553/img00009201005251543.jpg
definatly looks like a HVY to me. there is no real joint on it, its more of a reinforced hole, which, to my knowledge, one of the signature thing HVY does with some of its bongs. i personally like it alot. less chance of breakage.
So I'm guessing HVY is a good brand The head shop I go to has about 500 of them along with a few JBD bongs from the guy himself. I'ma do some close ups of the family soon, but I would like to get my ash-catcher and SharpStone first.
HVY doesn't have a following of fakers like ROOR. If it's got a HVY stamp on the glass it's the real deal. I doubt those JBD's are real JBD's. Do you know what I mean? If you do... maybe they are real.
Looks legit. I got the same tube just mines not fumed. Really nice smoke. PROTIP- Try it with HOT tap water You'll be pleasantly surprised
Been using hot water and ice ever since I found out it was Pyrex. Love the steam effect. Check it out seriously though! I have a milk shot now In the signature