Well, speaking of Italy, that was in the cities, I am old enough (while not being that old) to still remember in the late 70's/early '80's (we had a house in a relatively small country village and as kids we went there with grandmother from June to September) that in the late afternoon the milkman (actually milkwoman) made her round with a donkey carrying two or three huge (probably some 30 or 40 liters each) large aluminium containers/canisters, similar to this:

https://i0.wp.com/www.ilvecchiotarlo.it/bidone_latte.JPG

and we (we intended as the kids) were sent downstairs with either a glass bottle or often with just a pot, and get either a liter or half a liter of milk.

The milkwoman would have "graduated pans" and get from the large container the asked amount of milk and give it to us, noting it down in a small notebook, and every week or maybe two produced a bill (actually that page of the notebook) to get paid.