Wow! Antique-shop.com forums are in the big #1 spot on Google for the search term "antique shop forum", for 4 years running!Thanks to YOU.
Aluminum bowls!! Agree must be owner's (at one time).You can mix with them but Don't cook in them! They are slightly pitted and the heat will allow aluminum to leech into your foods - not good!But mixing and using them is perfectly fine.Use them all them time and used them when chef!