Amusing Mid Century Mix and Match Egg Cups Made in Great Britain

Another Great British Innovation...
Mix and Match Egg Cups.
The tulip shaped bowls sit securely in their deep saucers (taking care of salt needs, spillage events and a waiting place for tiny soldiers) but with a deft twist the top and bottom can be separated, and, if you've acquired more than one colour, you can mix up those tops and bottoms.
See the second photo for a demonstration of some of the fun you can have..
The bowls are 7cm wide and the whole egg cup is 5.5cm tall.
Made in Great Britain stamped on the base (see 5th picture)
I have 4 colours, pastel pink, blue and green and a creamy white.