Heinz pre-1929 Ketchup?

[embe]

I was getting ready to recycle this and found some info on https://sha.org/bottle/pdffiles/Heinzbottlecodes.pdf that leads me to believe it's older than I thought. From what I gather its a #251, no earlier than 1918, and no later than 1929. Is there a way to narrow it down further from the base code or not even worth the effort.

 

[ROBBYBOBBY64]

Here is the Owen Bottle Co. Dating logos and codes. Hope this helps.
ROBBYBOBBY64.

 

[Mac2395]

I have one with a similar bottom