Square case
14k white gold filled
edge pattern and matching frame on the back
interesting double hinge tri opening.
blue steel hands
Four adjustments to movement
The 1926 adverts show lume spade hands. I do have those if you need them. PM me for more info.
1926 Ambassador at snippet. Doesn't state gold color.
Subject Watch.

Another 1926 Ambassador, stating white or green gold.

3 ticks Ambassador.
I think a counter balanced sub-seconds hand would be appropriate too if the owner decides to change the hands.
Absolutly right on on the secs hand needing a change too. The watch looks out of balance without the cath or spade hands. I prefer the cath myself and mine look just great. I will eventuall get aroung to posting them as unknowns to get them published as Ambassadors.
My vote is 3 ticks for Ambassador.
John
Interesting case SN starts w/ 6, but also has the June 1927 patent date. Nice older 10AN w/o date code.
In reply to Interesting case SN starts w/ by William Smith
Disregard above. It looks like the June 10 1924 patent date, not Jan 11 1927.