How old are these beauties

[CCB420]

So I was given these bottles by 2 different customers and I know they gotta be somewhat old, but again I'm just learning about this whole bottle phenomenon! Here's a couple pics of the ones I thought were old:

 

[CCB420]

And these

 

[CCB420]

Sorry about duplicates

 

[CanadianBottles]

I think three of them date to around 1890-1920 except for the machine-made one which dates to (I think) 1968 if I'm reading that date correctly.