Hi there,

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?

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Name:	Crown Jar pre-1928.jpg 
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ID:	184371

Thanks for your help,