A good friend of mine who is an avid well know Browning collector uses this quote.

"I've never been burned by a salt gun,Because I've never bought one"

This friend has owned hundreds of brownings and avoids salt-era gun's. Even if they seem ok after inspecting and testing them you can still have problems down the road. When you do try and sell them it's very difficult and not worth the hassle.

Browning for a while was replacing salt wood with new wood under warranty and if you have record of this it helps sell them.