'tis dinky indeed!
A very nice dinky, with a lovely yellow/ochre frothy inside from the use of silver chloride.
An early shape, used when MH was still there and used by the Boffos to create tiny jugs, wih the addition of a spout and an applied clear handle.
The mould was used after MH left too - these have been seen in pink splodges and white splodges, indicating into the '80s, but earlier are mostly blue or amethyst. Finding one with an ochre-y frothy inside is a little unusual.
This is my little jug. It's a wee stonker.