Kids in Poland used to send me copies of local punk records in exchange for copies of my band's album; this was one of those singles. It's the b-side of the pictured single, actually. When I went to see if there was any info on them on the web, I discovered they have a MySpace (linked via the band name above). There's a cool b&w video for this spiffy lil' number, even.
After this, Siekiera released one album, Nowa Aleksandria, which has been reissued on CD at least three times now. The tracks from the single are included as bonus tracks, but I don't know if there are any other extras as all I have is the OG vinyl of the single and album.