Thanks very much for the I.D. on this , much appreciated !
I think the 1969 cat. describes it as a half-pint mixer (as far as I can tell from my screen ) , mine holds under 3/4 of a pint (but on average it is the same height as Steve's). Adding a few ice cubes to half-a-pint of liquid would bring the level towards the top
The pic. in the 1969 cat. looks exactly like Steve's example . the spout pointing upwards. Very similar in shape to Boffo's Mdina mixers .
Mine has a spout that is horizontal (almost, slightly upward pointing ) and is very similar in shape to a larger version (see links to WF's cats. above).
My conclusion is that my example predates the 1969 version .....I could be wrong though
Thanks again Steve for your pic. and help with this ID. Ta, Mike