My 1937 WC has the flat fenders.
My 1940 WC has clamshell fenders.
My two 1941 WC's have the clamshell fenders.
My 1943 WC has clamshell fenders.
My 1947 WC has clamshell fenders.
My 1951 WD has clamshell fenders.
I am sorry. My mistake. I don't know what I was thinking. The WD fenders are the same as the WC. My 1940 WC is a hybrid of the styled and the unstyled.