vintage Shenango china Inca Ware desert tan ironstone jam jar or mustard pot w/ lid

Small condiment pot (for jam? for mustard?) Inca Ware tan ironstone made by Shenango China. This is mid century vintage, diner style tableware with the dark red striped band pattern. This stands about 3 1/4" tall to the top of the lid. It's in very good condition, barely used. Nice and glossy without chips or staining.