I picked this one up at a garage sale. It's got a twin bowl, which screws on, and seems to be made of some kind of carbonized "plastic". That just seems so wrong. The stamp appears to read, "Kohinoor" and those 3 stamped insignias on the band appear to be branches of the military - an anchor, a star and a duck walking with a golf club, but it could be a brand insignia. The band shined up nicely, so it appears to be plated silver. I've googled Kohinoor, and Kaywoodie did have a pipe shape named that in the 1930's, but this isn't the same shape. I'd love to know if anyone has run across a pipe like this or has any conspiracy theories they'd like to throw out there.