Cannister light head or bulb

anyone know where i can get a bulb for a cannister light or even maybe buy a new light head. I have one made by steve Gamble it is kinda a glass bulb inside another glass. Not even sure what wattage it is but its very bright.it has a crack in the glass its still works but need one in case it goes soon. I tried looking on dive rite web site but cannot find any.

Maybe someones has some lying around they would part with.

There were several types of lamps used in the old canister lights. Steve Gamble is still in business, contact him at http://www.gamblescuba.com/. If he can't help you, post a picture of the lamp, I still have several lying around.