Thanks everyone for your replies. This is the first bottle i've found and the details posted have been really interesting.
In reply to Bluegrass, The inside of the lip is smooth ( no screw top) but the interesting thing is the stamp at the bottom of the bottle, as well as "portobello and...
This bottle was found in Portobello, Edinburgh.
It is approx. 7 inches tall and 2.5 inches in diameter at the base.
The colour is 2-tone and is a light creme colour in the lower half and a glazed tan colour at the top section.
The inscription reads...... "BLANCHE & CHRISTISON, wine merchants...