This is the only closeup I have until I receive it. But thank you for all the additional information. Where do you recommend I do research on these models? It seems when I do Google searching, I find limited things on this era. But if you are saying it's more of a rare design, that might explain it. I saw a couple at auction go a little cheaper but I know this has been serviced, I know the guy who serviced it as well, and it came from the friend of said watchmaker. Provenance is good!
Yeah the Florentine finish of the white gold is in stellar shape. I've got a soft hold on it right now while I work things out. I have to sell 2 or 3 watches to make room from some chunkier pieces.
Looks similar to the 1954 k450 is a cool model. From their "one watch model per year" automatic run.
http://www.hamiltonchronicles.com/2018/12/1954-automatic-k-450.html?m=1
This account is verified. WatchCrunch has confirmed that this account is the authentic presence for this person or brand.