Here's my two favorite insulators, unfortunately, I couldn't say which one I like more, so, I just photographed both. Anyways, on the left we have a SMOKE no embossing - Canada CD 143 MLOD [whittle mold]. And, on the right, we have a bubbly, overpoured and generally crude TALL VARIANT no-embossing - Canada CD 143 in light aqua, these guys are really actually a lot scarcer than the price suggests, I found a bunch on a line a while back, and I only know two others out there who have found any, anyone else care to fill me in on whether or not they have found any?