Bottle lip numbers.

[ROBBYBOBBY64]

I was looking at some of my embossed bottles from the 1920-30s. I never noticed the number on the lip of two bottles i have. Any idea why they were placed there. I have to look more at my others to see if i have more. A lip mold number? Odd because i could not find anything about it in my searches. If you all have any idea please do tell.

Puritan bottling Co. Hoboken, NJ.
The number 59 on the lip.

National mineral water works West New York. The number 30 on the lip

 

[PlaneDiggerCam]

It's odd because I was thinking these were date codes until I saw the 59 one on yours. They are probably mold numbers or something si.milar.

 

[ROBBYBOBBY64]

That maybe the case because i see no other numbers anywhere else on the bottle. If i find anymore of the same bottles i could see if the number varies. I think you are correct. Thanks for your expertise.