For the Constellation, these became available in 1956 in references 2852 and 2853, for example. When looking for one, be aware of restored (reprinted) dials, incorrect crowns, and corroded movements.
It’s a clean, classically styled watch with a 50m depth rating and a choice of three colorways. My favorite detail is the hand-winding flyback movement. With Eric’s involvement, the Atwood Wind ...