Terrible Teapot Conundrum

I posted this on the antique discussion board, we are still puzzled. What do you think this metal is? Oxidized brass? The inside of the teapot is silver colored. It also has some faint marks there. I have only seen two similar vintage teapots o line. Thanks.





The only two similar teapots I have found

 

I would say the inside is tinned and the outside is oxidized. Here is a web site that shows the different colors and how they are achieved. https://www.monarchmetal.com/blog/u...onze-and-oil-rubbed-bronze-or-brass-finishes/

 

Wow, thank you, I see the color there! I am sure it's brass.