Hello,
There is a picture of the battery version the Cossor 334 here :-
http://www.classaxe.com/wireless/dat...uk_cos_334.jpg
There was also a mains version in the same cabinet, the Cossor 336, which would be the one you would have had if it is the right radio. (and as John says there was a version with a built in speaker, the battery version was the Cossor 335 and the mains version the Cossor 337.)
Yours, Richard