In the late 70s, I bought an airgun that I believe was a Diana. It was sold by a outdoor sporting mail order company that I cannot remember the name but it is out of business. Maybe started with a P. The airgun was rated at 690 fps in 177 although the mail order company mistakenly rated the 22 cal that. I believe it was a fairly common airgun in the states as our local sporting goods store had a 22 cal version. Thinking it was a Diana 27???? I don't think the airgun had the name Diana on it but not sure. Any ideas and pictures.