My first ever studio pot but who by?

I've owned this little pot, just over 2", for many years now and always loved it and often wondered who made it; it's probably the first studio pot I ever owned before I collected Studio pottery.

The incised marks are very clear and seem to be a winged ace of spades a diamond and the initials MS, or SW, any ideas would be very much appreciated.

It looks Near-Eastern influence, and one of the marks appears to be an arab coffee pot, so my best guess is Moroccan/Turkish or even Hungary/Bulgaria

Yes I can see it now, I thought the wings on the "ace" were uneven but it could easily be a spout and handle but the initials would probably make eastern europe more likely I imagine.   

Very possibly.

Turn up the other way & it looks like SW and possibly a bird plus a diamond/kite.

A drunken goose flying a kite.   

The possibilities are endless all it needs is imagination.