The back stamp, hand written pattern #, pattern and mold form 'Colonial' date the bowl to the mid 30's to the early 40's.
This company trained the women to paint the designs and were encouraged to come up with new patterns.
This pattern, 'Savannah' is hard to find; one of the rare ones. It would make a good addition for anyone trying to collect the Savannah pattern.
It is in excellent condition considering its age with only one tiny chip as shown.