Alex

To me this box could also be chronomatric box, i have only seen 3 of these and Heuer period for random items is all along the 70s for me. I have seen original paper Monaco automatic variants in boxes with no automatic writing and vica versa...

I think much of this is our own opinions, we formulate them and then it becomes reality for us. I think personally there is every chance this box i post could also be a chronomatic box, but who knows for sure? Maybe it is a transitional box between the old cigar boxes and the clam shell design, so circa late 60s...

So much of this is detective work and heavily opinion based, Heuer never helped us out by detailing all of these "issues", thats partly a shame but then if we were so certain, there would be no fun debating!

Cheers

Rich