I ran across this nice old eagle butter or salt crock in great condition with the lid intact for $8 at a local antique store. It was incorrectly labeled as a "vintage container". These date to the 1900s or 1920s if I'm not mistaken, I think this was about the last time butter and salt were routinely sold in crocks, right? Maybe someone has more info? These are pretty common and not terribly valuable, they seem to sell for about $30 on eBay. This one was missing the bail and wooden handle, but I found replacement bails for $6 on eBay.