Well, I'm reviving an old thread just for the purposes of updating.
Since I posted this thread almost 1 1/2 years ago, I have become a full-fledged airgun enthusiast and collector.
I own (for shooting purposes) two Diana model 34's in .177 cal, and one in .22. Excellent shooters and powerful enough to take small pests at 30 yards or more. I also acquired a Feinwerkbau sporter 124 with an old Beeman scope, which is the queen of my collection. My initial interest has bloomed into a really fun passion, and the old German air rifles are the ones that I treasure, but I've managed to come up with a couple of old American beauties as well.
Here's a few pics, for anyone interested in the sport/hobby.
Diana model 34 made in West Germany prior to reunification
Vintage 1963 Benjamin model 312
1981 FWB 124 (the queen)
Early 60’s Diana model 50