It was about the same vintage, evidenced by the "Made in W. Germany" stamping. A good place to read up on airguns in general would be here:
They also have a "classifieds" section should it come to it. It's a reputable site and members are vetted to an extent.
For what it's worth my P1 is probably my most fired gun. I can shoot in my basement and I take it to the range whenever I bring my firearm pistols. I use it to "warm up" before breaking out the more expensive center-fire ammo. It has made me a better shot.