I have watched Comoy's Christmas pipes for a few years and even restored a couple. Every one that has been posted on Ebay has had the stamped "C" stem logo. Even on the few sets that show up, all have stamped logos. This is the case even on pipes that were made prior to the merger (which truthfully aren't seen that often from that era).
But recently, someone listed this 1976 pipe which has a drilled 3 piece stem logo:
http://www.ebay.com/itm/Rare-Comoy-s-Christmas-1976-Briar-Estate-Pipe-Only-1200-Made-Free-Shipping-/232327158545?&_trksid=p2056016.m2518.l4276
Does anyone have a copy of Hackers "The Christmas Pipe" that might explain this?
But recently, someone listed this 1976 pipe which has a drilled 3 piece stem logo:
http://www.ebay.com/itm/Rare-Comoy-s-Christmas-1976-Briar-Estate-Pipe-Only-1200-Made-Free-Shipping-/232327158545?&_trksid=p2056016.m2518.l4276
Does anyone have a copy of Hackers "The Christmas Pipe" that might explain this?