For the past 10 years, I have been picking up various stainless steel lined 2.5mm Mauviel and Bourgeat pans from eBay and other places. It has been fun running into the real bargains, and I could never have afforded to pay new retail prices. I got some of them at Sur La Table years ago, shop-worn display pieces at less than half price. I went in there recently and was sorry to see that they only sell the thinner ones now.
Anyway, the two largest pots I have are marked Dehillerin, with bronze handles, and they are considerably thicker than the other ones, measuring 2.97mm. and 3.18mm. They would appear to be made by Mauviel. Did they only produce the stock pots in this thickness? This grade of pan seems to be discontinued, as no dealer mentions anything comparable. But I'd like to run across some more, as they have become my favorite pots. Sadly, the heavier stuff is not available in the stores any more, and on the internet, the prices are truly astronomical.