I agree with Mart, it is either a child's version ..... or a salesman's "sample".
It is a beautiful piece, .... and in "light" blue enamel w/warming oven
ta boot, ...... that almost makes one think it is a "repo".
Is there a "name" on the oven thermometer? If so, that could be a "clue" to its date.
Regardless, me thinks it is worth a "
pretty penny" ..... if only as a "decorator" item.
They don't get much better than a "pretty blue" such as that.