Hi everybody, This Xmas I was looking around at my parents basement and found a set of copper pans (see picture) I managed to persuade my parents that it would be better if I used them instead of being neglected, so now I have those pans. My parents told me they bought them about 30 years ago. My main question is what the lining is made of: tin, stainless steel or something else ? So I know for what to use it (and for what not) Searching the internet didn't help. The bottom of the pans read the following: Georg Jensen design, Denmark and the letters HK in an oval. Any info is appreciated !!! Jeroen