One of my favourites an 18kt 2652 cal 354 which I have just treated to a "new" 9kt buckle courtesy of @tyrantlizardrex
I'm wearing my very first Constellation that just arrived on Thursday night. A SS 1961 Pie Pan with Cal. 551. I'm very taken with it.
Which one? I've got dad's old piepan but own no Constellations myself anymore, only the 3 Seamaster Piepan Deluxe's and the Cal 320 dress chronograph, I just prefer the beefier Seamaster cases as they wear a bit larger