Well, here we have a discrepancy because I also have this car as 1956.
At first I thought it didn't look right for 1956 but there were other Japanese kei cars of around this period that had similarities so I figured it is right.
I cannot find 1965 mentioned anywhere in connection with this car, but several sites quote 1956 so I'm going to give the point to morphly; if Trommel can prove that 1965 is in fact correct then you can have a point too..
However this turns out to be a recent repost, although it's described as a Nissan Baby rather than a Datsun Baby on the other puzzle; searches on the Internet produce no results for such a car but several results for a Datsun Baby. I am in any case merging the puzzles but am still open to comments and further proof!