M.D.
路You'd have to go with an All Guard if you want the 1953 version of this style. Conquest didn't come about until 1955-ish because of some problem with the name. I don't know the details but maybe @Tony C., @gatorcpa or @Bill Sohne might. It's still a 900x case (9006 mostly) with the same crown and 19AS caliber inside.
Thank you Dennis, this is good information. I imagine it's going to be a long search, but that's what makes this fun. 馃榾
Also, I imagined 1953 may throw a wrench in the works and figured there will be plenty of research necessary to come up with the ideal watch candidates.