The earliest address i could find was 24 & 26 wooster street, then 43 & 45 wooster street (my research confirms as early as 1889 to 1915). 2.5mm to 2.6mm (varies).
The pans we sell are used and loved. They have evidence of use including nicks, scratches and dents.
Some pans are more heavily used than others. Please examine the pictures carefully.
This item is made of iron and tin, copper.