uhm, owning a 62 overlander and having sat through Herb Spies incredibly boring talk about differences of Cali vs Ohio on the
1962 overlander, I can tell you that you have that directly opposite. Ohio built the straight wheel wheels and California messed with the cut out shapes. Those tail lights are also exactly in the same location as mine. The license plate is also high up and in the middle, Cali put it to the left and half way between the window and bumper. The drip caps were used right up until
1963. The other big clue is the battery box. It is taller in 62. The 61 I am currently working on has low sloped sides just like that one does.
1961 Overlander, Ohio built, twin bed model.
Hopefully no one will go look in the archives and cheat. This guessing is fun stuff.