It's not exactly how I expected it to look. In the mold, the holes are all drilled to an even depth. On the bottle, only the bumps along the mold seems reach the full depth. The other bumps are very shallow on the bottle. This is because only the bumps along the mold seems were vented. All the other holes have no vents, and trapped air prevented the glass from filling them. By the way, I haven't tried using this mold yet.
Well Brian, That was a lucky find, and an attractive glass color besides. Yes I agree venting would be a hard factor to correct. Four vents on the back of the mold halves, done on a venting machine would be the way to go. Toledo Mold Shop near
Toledo Ohio could do it. Most glass factory mold shops would have an 84 Pennsylvania venting machine. The vent holds would be drilled with a # 70 drill in the tip and backed up with a larger drill from the back side. This venting machine has a common beam for the drill heads so the two drill center-lines meet correctly in the produced hole. Do you have the bottom plate? You would also be blessed if you had the design for the parison shape if you were to attempt to blow one. Or of course if you had a blenk mold that would help, if you were able to get it fixtured for the job.
And if you had a neckring assembly with the guide ring that would help. I couldn't tell what kind of set up the mold fitted into. Still nice to get the piece of glass to match it.
RED Matthews