While I wouldn't want a reissue without the two bonus tracks, I don't personally consider them enhancements to the overall package. 'Lauft' is a loose 26 minute sax, bass, and drums jam with no peak moments. Excellent archival material that tells the whole story, but not necessarily good music.
CD: 2013 Belle Antique (Japan)
Embryo's debut was one of the original 5 Ohr albums, each featuring a unique gatefold cover of painted body parts. In the middle of the front cover, there was a slit that contained a balloon (like the auction photo above). For those with the balloon fully intact, the prices can soar. On the CD reissue front, it's surprising to see that no indigenous label has taken this on, especially given its historical importance from one of Germany's most uncompromising and famous underground bands (there is one German LP reissue). Surprisingly, the Italian label Materli Sonori has managed to exclusively hold onto the rights of the first two Embryo albums. I believe the reason is that Embryo had moved to that Italian label for their new material in the 1980s, and they bought out the rights at that time. Not until 2013 did we finally see a Japanese mini, and given the cool cover, this is the copy I now own. The Belle Antique version, like all Japanese mini's, is true to the original and includes a balloon in a plastic package. None of the reissues sound great and are slightly muddy, as I'm sure the source doesn't either. But I've never owned an original to confirm that. However, all the CDs feature the 26 minute bonus track, which I discuss above. My introduction to this album was the 1990 LP reissue on Materli Sonori.