I am not a tobacco smoking pipe expert...For auction or buy it now is this squat, bulldog style Dr. Grabow "Silver Duke" "Ajustomatic" Imported Briar estate tobacco smoking pipe. Patent number is on pipe. I have not cleaned it. Pre-owned. This is in used, "good" condition with moderate cosmetic wear and needs to be cleaned. Please mouse over photos for close-ups as these are part of the condition description. 6" long, bowl is approx. 1-1/2" high and 1-3/4" wide. SHIPS TO U.S. ADDRESSES ONLY. In lieu of shipping, after payment and prearrangement item may be picked up at my antique mall, Vintage Secrets in Canonsburg, PA (25 miles South of Pittsburgh). Thanks for visiting my auction!