This cute old teapot holds just one cup, and looks as though it sings "I'm a little Teapot" to itself, it's short and stout! That's a regular mug (not included) shown next to it, to give you an idea how small it is.
It's enameled steel, unmarked, very worn inside and out. I think this was a child's size piece at 3 1/2" tall. It looks as though it's been much loved and used.