Sorry, I made a mistake, they broughy only one L-39ZO serial 254 (origin unknown) and 8 MiGs (probably 2 UM and 6 bis)
Their pilots learned to fly on Aerostar Festival light planes (company owned) at Boboc and on their overhauled L-39 at Bacau. This was spotted only in natural metal overall, with Romanian roundels and no serial.
They bought two new Aerostar Festival, which are reportedly crated awaiting delivery to Mozambique.
The only MiG spotted so far is reportedly UM serial 320, seen during engine testing with no tail on, no serial or markings visible:
http://romanian-spotters.forumer.ro/t73 ... mbrie-2013
The Il-76 seen lower on the page linked above came at Bacau to "transport" one L-39 and one MiG - the source didn't mention wether it was bringing additional airframes for overhaul or taking the ones already overhauled to Mozambique.
The whole deal is surrounded in secrecy.