I had to stop and think on this one. I think in total I have had 16 Datsuns over the years. I still have 9 of them. They weren't all 1200s though. Here is the breakdown as I remember it, in no particular order:
1) 1980 510 (A-10 Staza 2-door sedan).*
1) 1980 510 (A-10 Stanza wagon).**
1) 1972 or so 510 (PL-510 wagon).**
2) 1978 B-210 coupes (at different times).*
1) 1962 Nissan Patrol (just a frame, engine and drivetrain).
1) 1980 200SX (S-11?).
1) 1976 620 pickup.
8) 1200 coupes of various years, two of which I don't have anymore.
* indicates ones I don't have anymore.
** indicates ones I don't own, but still store for other people.


I just remembered another one:
1) 1984 720 pickup.

That makes 17 total. I think that is all.

Oh, and I think 11 or 12 is the most I've owned at one time.