Hi Guys,
Sorry for not posting this info earlier...
The fuselage badge on L-39C, reg N239BB is very similar to the Irish Air Corps Light Strike Squadron badge , however the badge was changed considerably, incorporating 84 (Russian Squadron no) into the body of the badge, but largely, it is a copy of the Air Corps badge.
I'm still waiting on more pictures of the L-39 and when I get them I'll put them on the website.
Regards,
Frank.