There were similar vehicles before and after this, such as:
1931 Type-DA
1932 Type-DB
1934 Type-DC
1934 Type-KA
1935 Type-KC36
1935 Type-TCS
1936 Type-KC37
1938 Type-GA
1945 Type-GA (post-war version)
1949 Type-GB
1950 Type-LB
However, Mazda provides images for most of these and they do not match the puzzle vehicle.