Hello, these PVD beauties came out in the early 1980's and stayed on till TAG took over. They are amongst the last real Heuers.
Timeline: also based on catalogues, initial production should have been from 1982 and the latest Heuer-signed were released in 1986 but sold till a couple of years later.
There are also some (identical apart from the markings) bearing "TAG Heuer" on the dial but typically still sporting only "Heuer" on the crown and the case back; these ones are later, say till 1988 and so probably sold till the end of the 1980's.
Fabrizio