This camera comes in fully working condition.
It has a small dent on the top of the prism very difficult to notice.
The Asahi Pentax S1A was Asahi Pentax’s attempt to make a consumer-level version of their S, S2, S1 & S3 professional SLR range in 1963. Their rather counter-productive way of accomplishing this was to remove the mark for the 1/1000 shutter speed (it’s still there, it’s just not marked, you just dial one past 1/500).