Crown Mason Jar pre-1928 - 3 dots on base meaning?
I just picked up a Crown Mason Jar pre- 1928 (before they started embossing "Made in Canada" on the jars). I have several of Crown jars in my collection but have never seen a base embossed with only 3 dots in a triangle formation. Most have a Dominion Glass (Diamond D) makers mark on them.
Does anyone know what these dots mean and possibly a more accurate date for this jar other than pre-1928?
Also, which forum are we supposed to talk about fruit/mason jars?
Lastly (for today), here's a great picture of a 3E2 (1932) Thatcher milk bottle base. Unfortunately, its fully embossed and not an ACL. But it will give us some idea of what to look for and hopefully...
The copy/pasted paragraph below is from the 1939 Julian Toulouse article I posted earlier. I selected this particular part because of the first sentence where it says ..."In the beginning of the silk...