It looks like around 1980 plus or minus a few years. I have some from that era which I bought from a shop back then. The slightly earlier ones did not have a contrast grade number (2 in your case) but just the letters that Agfa used (in your case W = "weak" i.e. a bit soft). Good luck with it. I have found that my Portriga has not kept nearly as well as the graded Brovira from those days.
Let us know how it goes.