If someone fills the jar to only 473 mL then the jar is filled to less then
full and there is no chance of over-flow. If however, you tried to sell
these in the UK, they would illegal if the labelled them with pint and
someone tried to fill it to a UK pint and over-flowed the jar. To be legal
in the UK they would need only state the amount in millilitres.
Of course you are guessing again.
A jar can be labelled in ml or pints or both in the UK.
There are no laws on vessels.
Ironically - If you ordered a pint in a bar and got a glass labelled 568ml
that would be illegal.
Bizzare and stupid, but true.
(unless it's shandy!)
