TubeNet

I believe this seller is a TubeNet sponsor but AFAICT he hasn't posted this one yet:

http://www.ebay.com/itm/Sonora-4-rotary ... SwTZ1Xn1SC" target="_blank

I'd put this one no later than early 1970s, since it has wire springs and S-links.

Currently at $510- looks like someone will get a rather good deal.

Yea, a monday morning gavel is a bit of a ****-up! I'll be setting up my Gixen with a non-competitive bid, just in case.