Bulova 1970 Accutron Date & Day
Got it a few years ago with a complete package - inner plastic box, outer cardboard box, instruction manual, all that jazz. I always wanted a 1969-made watch (same as my age) and this was the closest I've been able to come to. It's perfectly wearable even today and even on my thick wrist :-)
I don't know the name of this model, time-span of manufacturing and I've never seen a watch like this anywhere, eBay including.