NOS Thorn Gamma 5 internals

This i could not believe. On the 6'th March, the last day of a 2 week work experience at the local street lighting depot, i went to a different lighting depot about 30 miles away, and was allowed onto the roof of the offices (this was under the actual roof), where no one has stepped for years. I found what looked like a ratty box up there, upon opening it reveled this NOS Thorn Gamma 5 inside, so you can imagine my surprise and excitement. I came away with this and another NOS lantern. The lanterns shown here after a good scrub, it was filthy inside and out due to years of disuse.
Sadly its missing the spigot adapter, so does anyone here have a 76mm spigot going spare?