Thank you for the kind offer but I ordered one online last night.Is that similar i wonder to the little Waterford Glass type ones? I have one here that came out of a Waterford Glass clock, seems to be roughly same size, maybe I can try measure more accurately! It has a gold coloured surround, now it's not going at the moment as I presume the battery is long dead but have no reason to believe it might not go with a new battery. Have you a pic of the one you need?