Copper Boiler with Lid M199

Original, quality late 19th century copper boiling pan of the bellied form with a turned wooden side handle and a lid with a central hole and a wooden handle above. This super-quality pan has the remains of a brass maker's label for "Maw Son & Thompson" on the top of the lid. But we have been unable to find any reference as to what it was used for and what is missing if anything. In good order.