Alfa GTZ Cigarette Lighter Value?

I have a very nice, mint condition table top red GTZ style cigarette lighter in red. I believe it was made by Swank. It is heavy metal, from the mid 1960's. It was never filled with fluid. Anyone familiar with this collectible and its rarity/value ? I have only seen one other and it wasn't for sale. I do not have the box it came in.
Thanks
Chuck