Thorn guard light 4w non maintained

Picked this up many moons ago NOS. The battery pack leaked all over the PCB & it was f*cked. I stripped it all out & fitted a Tridonic 4/6/8w magnetic ballast, and a pulse starter with potted canister & fly leads to make a cute, if not exactly bright, bulkhead. The Holland made philips tube has taken banding to a whole new level though! (I think it maybe slightly comtaminated)