Unusual glass advertising clock for raincoats

Unusual clock, advertising dannimac weatherproofs, a lovely unusual advertising clock, has been converted to a battery unit on the back of the clock, the plug is used for the light in the clock, need re wiring as not working. Would look lovely lit up and working. 
condition 

the clock has some wear and tear needs re wiring for the bulb to work and a battery. Some of the printing has come away as seen on pictures but an unusual clock.

any question please feel free to contact me.