I recently got this cube with Aleksey's help (thank you).
Now I need to know what is written on the box.
Apart from telling that Erno Rubik is spelled as Enro Rubik,
I can't tell much more.
bulgarian7.JPG [ 331.03 KiB | Viewed 527 times ]
bulgarian8.JPG [ 346.06 KiB | Viewed 526 times ]
bulgarian9.JPG [ 355.89 KiB | Viewed 528 times ]