Cannot attach a photo here yet, so here is a careful description. Galeb, cream-coloured plastic case with a slightly yellowed lid, rubbery keys that finally don't stick. Serial plate on the back, two screws missing which I replaced with slightly different screws, I'm ashamed. Inside: a Z80-family CPU, the board labelled by hand in blue ink by whoever assembled it. A small burn mark near the power regulator, repaired by me with new capacitors.
It boots to the old BASIC prompt in under three seconds. I typed PRINT "YU" and it printed YU. I sat in silence for a while.
If someone knows the exact production batch from the board markings, please tell me.