Looking for a Berney Karp Rumph 1981 Dragon Waterpipe...

I'm new here and am hoping someone can help me locate a Vintage Rumph Dragon bong. We bought one in the early 80's and recently moved after 40 years and we cannot find it! I am heartbroken... I thought I'd try to find one to replace it since we cannot find the original one. I've been searching on Ebay but don't really know of any other places to look. Any and all suggestions are appreciated!