What is the most desirable year of the 1960's convertible Galaxies.

There is no one right answer to this. Only you can decide which is the year you prefer. Basically, there were 3 generations within that decade, but styling updates were done annually. All of them have both their strong and weak points. To me, all of the 60s Galaxies are desirable. I'm sure others will tell you something different. It is a personal preference thing.