nonlinearcircuits Buchla 265 DIY clone
Based on the Buchla 265 Source Of Uncertainty but without the rare components
Panel & PCB available for DIYers or buy plug'n'play from http://rhythmactive.com.au/
http://nonlinearcircuits.blogspot.com/2014/07/sauce-of-unce-in-eurorack.html
No info about availability.