Hi it didn't make the book as it's just a round time-only watch that isn't chronometer. This model does however exist as a chronometer, and I've been trying to buy one for a few years now. When I do, that will go into the book.

Zaf

Sure if you want to post pics of your collection, feel free.

The earlier Caliber 815 watches did not have signed crowns. However, in my opinion the crowns on your watch have been replaced as they do not fit the style I'm expecting. The originals are a simple low dome shape.

I can't really date by case serial # but 1970 +/- is a good guess.

875 21 is likely to be the case reference number, something along the lines of E875 as 21 being the yellow gold, etc. Something like that.

I do agree with you and would expect an 916 in there.

Nice looking watch agreed, all depends on what you paid I guess.

Also, it's not an E855. That has a different shape.

Seems to be a Franken watch. A "cased and timed in the USA" should have a LeCoultre movement and dial. There were some models that had USA made cases that were exported back to Europe, but those usually had a "Plaque 80 micron" indication somewhere on the case for gold filled watches. Do you have th...

If there are grooves for the lugs, I'm pretty sure it's a custom job.

The gold filled Futurematics are trading at $700-1200 depending on model and condition. I'm usually a buyer on the lower end of that scale running, less if not.