1939-41 was the 91-99 as mentioned above the top casting is correct but the center die casting is 59.
Without a complete photo of the side of the Stromberg can not tell if 97, 48, 40 or 81. The original Stromberg for the 36 is a small logo 97 also embossed 67 top and center. The large or small logo 97 is identical to the Stromberg embossed 67 and all three are interchangeable. Ford had their carburetors marked with the prefix of the ford part number 67 because they also rebuilt carburetors and did not want to rebuild carburetors used on other car Mfg.