Conrad Schnitzler - 87b (?, 1987)

25.1.87  Con-Hertz stücke

15.1.87  Con-Hertz stücke

download

Conrad Schnitzler - 87a (?, 1987)

I am not sure if I am posted the right one, but I have here a whole bunch of 87a, 87b etc, so I guess these are it... 

28.1.87  Con-Hertz electrics

17.12.86 Con-Hertz electric music >>>

They might be from a CDR source

download

Conrad Schnitzler - 83a (?, 1983)

check out this site for the CONfusing discography of Conrad Schnitzler. This one has no image and is listed as "83A 30.3.83 upspeed  30.3.83-5.5.83 1-24 60  min"
Update: According to someone who left a comment this might be the cover. I am not sure, but I use it anyway

download