When Hubby and I were first married, My MIL gave me several of her recipes. Chipped beef S.O.S. was one of our favorites that she gave us.
I just looked it up on Kroger website it's Armour Dried Beef in a glass jar. Comes in 2 different sizes, 2.25 oz and 4.5 oz.
I don't rember the glass jar looking like it does now. I used to save the glass jars too