The last 2 pictures show 2 small cracks in the blade.
1928-1931 Model A Ford and Model T Ford Chrome Wings for Moto Meter Radiator Cap
2 SET Carburetor Major Repair Kit For Model A Ford 1926 1927 1928 1929 Zenith##
Model A Ford Car 1928, 1929, 1930, 1931 A-9170 Cast Iron Sediment Bulb Filter
1930-1931 Model A Ford Moto Meter Radiator Cap Plain Rim Style with Ford Script.
Vintage BALDWIN COMBINE 4 BLADE FAN 18" Original used on '30-31 Model A Ford
Model A Ford Throttle Assembly Casting Spring Control