I guess the Spaceviews are probably the most sought after Accutrons...judging by the number of conversions that are out there. Even in the genuine Spaceviews, there are several dial styles; some have chapter rings, while others do not. Hands vary as well.

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Two round case Spaceveiws (1967 & 1969); one is a conversion!	Cushion case Spaceview (1969)	TV Spaceview (1973)	Asymmetric with stainless steel case and a 14K gold bezel (1968)	Asymmetric with stainless steel case and a 14K gold bezel (1968)	Astronaut Mark I with GMT red hand (1965)
A couple of plain 214s; the one on the left being an early Accutron Alpha with the snap-type crown on the hand setting mechanism (1961 & 1967)