I won an ebay auction for a complete bike, and a pair of tubular 650 Zipp ZRs with tires came with it. I ride clinchers and have no need for these wheels.
They appear to be in good shape, but since they weren’t mine I cannot vouch for their condition. Zipp hubs, 58mm rim depth 19 mm rim width, 16 front and 24 rear spoke count.
I plan to post on ebay but thought I’d try here first. $500 obo.
Please PM me for pics and info from Zipp on these wheels.