Are these square lugs only internal (press into the bottle) ? I have a Triple XXX Root Beer Duraglass bottle with one that is external (sticks out of the bottle).
Thanks !
Here are some closeups of the three most common ACL ...
1. Dimple
2. Lug
3. Ramp
The majority of ACL soda bottles will have one variation or another. If anyone who reads this finds one of these on a bottle earlier than 1950, please let us know -- Thanks
But does it also have one of the registering Dimples? / Lugs? / Ramps? -- That's mainly what I'm trying to determine. The earliest use of any of those types of registering "buttons" that I'm currently aware of are 1951
SODABOB, I have two 7UP bottles that are pre 1951 that have the lug on them. One is dated 1947 and the other is an 8 bubble 1941. Both are from Owens-Illinois plant Number 3. Hope this helps your research.
I will make a note of those. So far I have only examined the bottles I have, with 1951 being the earliest. I'm just now expanding that search outside of my limited collection. As far as I know, Owens-Illinois was the first bottle manufacturer to use them.