Save yourself a lot of time and grief Mike http://www.mathmos.com/mathmos-lava-lamp-replacement-bottles-1811-0...
welcome to O.G.
Whoops !!! Its a big un... and just realized your in the U.S... Princess/rocket ?
Good luck with it.
Your very lucky, keep us posted.
Mike Davis said:
It is the original lava lamp from 1965, less than a dozen are known to exist.
Miles Davis, if it's an original, it won't be a five-gallon container. If it's a big cylindrical lamp which stands on three teak legs, you have what's often called, erroneously, a Princess, which was made later, but is indeed quite rare. 1965 models are conical and stand about 17" tall or so.
Might be an Imperial. Princess has a 6 gallon cylinder Imperial is about 5 though.
Jonas. By the way. The Princess (Rocket really) has a teak color to the legs but in reality it is oak. Imperial has walnut legs.