It's probably from the late 60s, Swiss only shield non luminous dial and probably roulette date wheel, 34mm case (I'm guessing). It's in nice shape, with rivet bracelet (prob a 7205). These aren't worth terribly much though, possibly in the 800-1000 range, slightly less than an Oyster Perpetual Date 1500. The bracelet alone may be about 200-300 or so, though there's a bit of stretch.