When I read LD's post several days ago, I did a Google search and came up with this information;
http://www.legacy.com/obituaries/name/b ... 0182393214
I passed this on to Larry via P/M but thought to include it here.
I can only convey my condolences belatedly to Petr and Rada. May your dad rest in peace. He was a good guy.
PS; this post is in response to LD's post below regarding the passing of Boris Plesinger MK
he came up with the adjustable power knob for the Air Arms S400 and S500 series rifles then passed that on to Air Arms, and they implemented that modification to some of there guns. he loved air gunning.