http://www.ahs.no/forum/viewtopic.php?t=157
It is sure Avia S-199.54 (s/n 54). Pilot of this plane escaped to West Germany sometimes after 1948 Communist Coup. Plane belonged to Bezpečnostní letectvo (Czechoslovak Police Air Force) and it seems to had wore Call Sign S-1. Unfortunatelly I don´t know when plane flew to West Germany.