I am being offered, by a private seller, a bottle of Michters from the mid 1970s that was issued in the crock. I have had some weird dealings with Bourbon packed in crocks before. I get old, flat flavorless liquor, like there has been intrusion of outside air that has allowed some of the nose to leak out. Perhaps this has only happened to me so I am asking if others have had issues with Bourbons stored in crockery in the past. Due to the age of the item being offered to me I want to have an idea of what I am getting into. Any ideas of what a Michters from the mid 70s might be worth and if it is worth picking up? Anything special about it that I ought to know?