Hi Alexander - the 5 mm. one is marked J. Gaillard. It is an old frying pan with new tin. Interesting that the Tupperware pots have a different shape. I haven’t seen a saucepan. The one I saw was a frying pan. I thought the handle looked a bit shorter than most cast iron handles. It was marked on the pan not the handle.
Speaking of odd copper brands, have you run across any Salling copper? I saw a couple in a discount store locally, marked down from $400 Cdn to $200 Cdn. They looked very Danish, which they are, with short fuzzy handles. Well, not fuzzy but covered in a black rubber type substance. What I am perplexed about is they are lined with pewter. I know we can drink from pewter mugs but I know nothing about cooking with pewter. Nor could I find any info on the internet so far. There have been a couple on eBay, smaller, e.g. 5 to 6.5", with straight up sides. When you look up Salling copper, there is reference to an old and large department store named Salling, in Copenhagen, which has a prominent copper feature outside. The tags on Salling refer to several generations of coppersmiths. That is all I know about it. I am curious about the cooking with pewter aspect. Any thoughts? regards Mae