Incognito Rolex?

If you contact the http://www.nawcc.org/index.php/library-research/research/61-library/larc/298-non-member-reference-requests, they have a research section that can help you with things like this. If you can visit in person, it is free, but for at least $20 they can do an investigation over email if you can send pictures.

Very interesting! Can you post a picture? If it looks like the watch that MonkeyToes linked to, my guess is no. My hunch is that Rolex would not have been supplying private-label watches to a regional jeweler by the 1960s. They were an established brand by then, so it wouldn't make sense for anyone involved to obscure Rolex's involvement in such a venture. (Even Rolexes sold by Tiffany and Cartier, with their names on the dial, still were also Rolex-branded.) Nothing else you've written here sounds like a Rolex - very few models (mostly Sea-Dwellers) had engraved casebacks, and I'm not aware of Rolex using any of that language on any of their watches. If you spin the hands 24 hours and the date doesn't change, I think something's broken. Mechanical watches are not cheap to fix, but if you plan on wearing the watch, you'll want to get it serviced anyway. I'm sure it's overdue. At least then you'll know what movement is inside. (FWIW, the movement in the previous post does not look anything like a Rolex movement to me.)

Sorry, I meant to say, "these are not inexpensive." Talk about your typos!

Have you seen these photos of http://ihc185.infopop.cc/eve/forums/a/tpc/f/9886009961/m/2803910957? Seconding the National Watch & Clock suggestion.

A few more notes -- perhaps they'll help you narrow down the timeframe. "These companies, Abercrombie & Fitch and Zell Brothers, sold Rolex between 1926 and 1930 and http://www.rolexforums.com/showthread.php?p=248296 respectively." And this: "The names "Turtle", "Turtle Timer", "Duo-Matic", and "Town and Country" were all registered trademarks of Zell Brothers Inc, Portland OR. They claim the use of "Turtle Timer" from 1935. The first registration was in 1938. http://forums.watchuseek.com/f11/zell-brothers-info-facts-wanted-needed-appreciated-whatever-577799.html, and "Town and Country" in 1950. The last trademark filing they did was in 1969 ("Blossom Time"). And: "It's hard to say anything about the watch you've seen...but as far as I know, http://forums.watchuseek.com/f11/zell-brothers-info-facts-wanted-needed-appreciated-whatever-577799.html Duomatic is most often seen on watches by Favre Leuba."

I don't think your information is quite right. What I am getting from the referenced forum posts is that Rolex entered the US Pacific Northwest Market in the 1920s (not the 1960s) through a partnership with Zell Brothers. By the time your father bought his watch in the 1960s, the only way it could be one of the Rolex/Zell watches is if it were quite antique when he bought it. By the 1960s, Rolex was firmly established as a status symbol timepiece, and I have a hard time believing any Rolex-made watches were sold unbranded at that time. In fact, on my wrist right now is my grandfather's rose gold bezel Rolex Oyster Perpetual Datejust that he purchased in the United States in the early 1950s. As ndg points out above, all mechanical watches need regular maintenance and periodic overhauls to function properly. These are not expensive (service on my Rolex recently cost something like 400 bucks). So, really, if you want to know about the watch, you should take it to a reputable, licensed watch repair place. They will crack it open and should be able to tell you everything you want to know.

You likely have a watch without a quick-set date. In which case you just need to keep rotating the hands past midnight over and over to advance the date. http://www.rolexforums.com/showthread.php?t=72384.