Hazel-Atlas - What do the numbers mean?

[kjen1226]

Trying to date this LePage’s Mucilage bottle. I believe the L on the bottom indicates Lancaster. What about the 3-8? Any way to date this?

 

[CanadianBottles]

They're probably just mold numbers and don't really mean anything to anyone outside the factory. For that sort of thing I'd usually refer to it as "50s-60s or so" since it's hard to narrow it down beyond that without a date code.

 

[kjen1226]

Ty!