Enamel discount french double boiler pot

Very large and unusual enamel French double boiler pot.Please notice rust spots inside and some chips.
dimensions:
Small discount pot: 5 7/8" height x 6 3/4" round (opening) x handle 6" long
large pot: 5 1/4" height x 6 1/4" round (opening) and 9 3/8" across on the bottom, handle 7 1/2" long
Overal 7 3/4" height.