I stand corrected. In my last post, I called the ARP 2600 a Putney. Something about that was bugging me but I didn't look it up and then it hit me today that I don't believe the Putney had a keyboard and then I realized it was the VCS3 that was the Putney and I started wondering if the VCS3 was even made by ARP and finally I looked it up.
No, the VCS3 was not made by ARP but by a British company called EMS and that this was indeed the Putney not the ARP 2600. Many apologies. But, anyway, that's the Putney or VCS3 shown above. THAT is the synth that Brian Eno used so much and then started using the ARP later. Pete Townsend used the Putney a lot too as well as the ARP 2600 and maybe that's what made me confuse them.
Anyway, there was no excuse. I should have checked it out before I posted but it was one of those things where you think you're right and then it hits you later that you're wrong and I was certainly wrong. Sorry for any confusion.