Originally Posted by Chev Nut
Tiny, your horn is not correct for a 1938. It is a 1933-1936 Standard horn. The 1937-1939 production horn has a round back. Chevrolet refered to it as a "spherical back cover".
Thanks for that Gene. It was on the car when I pulled it out of the barn. I love the sound it makes. It's almost an exact match to the Roadrunner Beep/Beep horn.