Thank you for your invitation - I will have definitelly few questions in concrete sections.
This SR has very interesting history ( at minimum for me ) - with few exceptions ( ´59 and ´60 Nortons ES 2 and Matchles G80) it was impossible to import ( and buy) british four stroke bikes in Czechoslovakia in 50s,60s,70s and 80s- only Jawa and Čz motorcycles were available. That is why all post war british bikes in our country were imported ( mainly from UK) during last 20 years. This SR is exception - Beeza was displayed at 1960s Brno International Industrial Trade Fair - bike was bought by famous czech racer František Šťastný ( Jawa factory racer, few podiums in GPs and TTs in 50s and 60s) directly at this exhibition , used for 4 years by him ( as this period "superbike" - and maybe the strongest and fastest bike in that time in Czechoslovakia ), second owner was a big fan of him ( and employee of Brno GP circuit ) and I am the third owner ...