Kinda works but to me art deco is a sub category as is mid century modern. Definately can't be modern after 1970, although being born on 1971 I'd like to consider myself modern but even on music that's not the case anymore.
I'd find it difficult not to see a 1950/60 watch as vintage. It may have a moderns style or a classic style to it but still it's vintage.
Same thing on 1920 to 1935. It can be modernist, Art Deco, military etc but they're still closing into antique to me, although I do concede these are sort of bridge years.
I agree typically antique is 100 yrs and over so ww1 and before, but i do feel that for wrist watches ( as opposed to pocket or wall clocks) the antique terms extends into and beyond 1st quarter of a century. An original Luois Cartier is an antique in my opinion.
Perhaps if we use the "start year" of ww2 it may for better as a vintage separator. So pre 1936 antique ( with whatever subcategory is attached to it) 1936 to 1970 Vintage ( also then with subcategories as mid century modern etc) 70 to 85 retro and after that modern... Although I think the bar is closer to 1990.
Again of course different brands and models having slight overlaps within those years.
I have a Waltham 1912 trench definately an antique , and I have a Hanmilton early 30's deco style ... Definately an antique to me. An original 1936 Panerai would seem more Vintage. Early 40's IWC and the transitional to first automatics on those years have to be vintage to me... Also as you start seeing more 36mm watches. All mid century and post ww2 to me seem definately vintage, I grant the sophistication of 50s and early 60s watches make them stand out and in many ways one would hope the late 70s and 80's where somewhat more in line with the prior decades, as such aesthetically there is more to see on 1965-72 than 72 to 85, but there's plenty on the later brands that transitions cleanly. But the 70,s did give us the digital era...
Anyway, fun stuff.
Here are some pics. all these are post ww1, all seem very much Antiques within my collection: the single pic is the Waltham which is actually pre ww1 and looks more modern than the other 3. But also an Antique.