Hello my name is John and I'm an addict 😁
Cal 1100, no idea on age thinking style of hands is a clue.

I'm thinking 1950s

Yes, and should be in the catalogs too. That looks like a manual wind. Does everything flip at midnight on the 31st?

Ha. ..I stopped at the 1966 catalog.. Didnt see it.. The minor difference from the 1950s catalog is mine dont have calendar script on the dial anywhere and Zodiac is written below the moon phase wheel.
Maybe after 1950 but before 61or ???
No big deal just bored and curious :)

I don't know what will happen on the 31st just got it yesterday.  But according to your catalogs being a manual it should change the month. .pretty cool

Not all of the manuals do that, but that is why I was asking. BWG and I have talked about that before. The energy build up is tremendous at that point and it loses time due to that. I am thinking that is why they stopped flipping all when they went to the autos. Just a supposition though.

Very interesting, makes perfect sense. That is alot of movment all at once.

OK, comparing your picture (not the best) I see it as F. in the 1950's, page 19.

Ha... .i'm embarressed.. For the life of me... I dont know... temporary insanity?
Thanks again butch. From the useless;  John

Don't be. While I don't look up every request from a VZ Team Member, I do try if I have the time.

www.ZodiacCatalogs.com (http://www.zodiaccatalogs.com) has 24 catalogs now, and SW is working on converting 3 more for display. (Or so he SAYS...) Then there are all the service manuals, parts lists, and other documents there. With the plethora of information available on that site it is very easy to miss one watch man.

<insert end of commercial here>

Month didn't switch

Dam! Yeah, there was two versions of that I think.