Hello, I recently purchased a old store front building that was packed with tons of stuff. It was like a time capsule from the 70s. After going to through everything, I found two (2) Free Flow stoves. Both stoves are still strapped to their shipping pallet and have never been used. After using Google, I learned about Bullerjan. Is there any added value to these because they are new, unused from the 70s? (I assume 70s). There is a metal plate that was on the one that the box disintegrated so I could see it has a model number and a person's name. Are they marketable in the US? The locals that I have shown them to basically do two things 1) stand back in disbelief of all the junk that was in the building and 2) comment on how cool the stoves look and ask if I want to sell them. Does anyone know of an expert I can send pictures to so that they can be authenticated and valued?