Tonitronik Rainbow-Serpent Modularsystem

via Aliens Project where you'll find more pics and details in German. Googlish here. Note this is for sale.

Update: Based on the comments, this appears to be a yusynth modular.

Yamaha SK-30

via this auction

Korg MS2000

via this auction

VINTAGE "KITTEN II" ANALOG / ANALOGUE SYNTH

via this auction

Jomox Xbase 888 Analog Drum Machine Synthesizer

via this auction

"Man Info: http://www.jomox.com/product_details.php?lang=2&category=1&product_id=10"

Vintage Roland SH-101 Mono Synth folder / flyer in German

via this auction

"Here is original 2 colour 2-pages folder of Roland JX-3P Programmable Polyphonic Synthesizer. Includes description in English, specification and photos. Golden era of analog synths document."

Vintage Roland JX-3P Programmable Synth folder / flyer

via this auction

"Here is original 2 colour 2-pages folder of Roland JX-3P Programmable Polyphonic Synthesizer. Includes description in English, specification and photos. Golden era of analog synths document."

Vintage Roland Juno-60 Poly Synth folder / flyer

via this auction

"Here is original full colour 4-pages folder of Roland Juno-60 Polyphonic Synthesizer. Includes description in English, specification and photos. Golden era of analog synths document."

Vintage Roland Juno-6 Poly Synth folder / flyer

via this auction

"Here is original full colour 4-pages folder of Roland Juno-6 Polyphonic Synthesizer. Includes description in English, specification and photos. Golden era of analog synths document."

Vintage Korg Poly-61 Programmable Synth folder / flyer

via this auction

"Here is original full colour 4-pages folder of Korg Poly-61 Programmable Polyphonic Synthesizer. Includes description in English, specification and photos. Golden era of analog synths document."