Here's a photo of the two bumper jacks used in 1939. One was made by Auscolift. It is by far the most common of the two. The body and base were painted drab green. The shaft was cadmium plated. The jack handle / tire bar was black.
The other one was made by Ryerson-Haynes. Cadmium shaft, black handle, black body and black base.
Other tools required were a screw driver, pliers, adjustable wrench, spark plug / cylinder head nut wrench, (2) open end wrenches and a lug nut wrench.
A burlap sack, NO Ford script and a vinyl pouch were also part of this kit.