i watched a doxumentry one time.in which salt was mentioned.and it's vaule was a great dael more vaulable, then every thing else,including all metals.and thats at least partly ,if not mainly.because of how hard it was to come by..and it'll be the same way with all food herbs water,and other everyday items as well..after a shtf situation.so if someone has old coins now.thats one thing.on acount,like it's been mentioned.they'll get at least some vaule back,eventully.id rather go with food,water,1st aid supplies,firewood,and other things that'll keep me alive,and safe as possible..