Hi everyone, I have inherited a silver arched clock dated 2002 with 'Mercedes Benz of Southport' inscribed on the front. The clock face and battery assembly are contained in a glass spherical ball which rotates about the upper part of the arch. Unfortunately the battery is missing and there is no indication of replacement type. Have tried 2032 and 2025 but they are too big. Can anyone help? Many thanks, Tony.