This is not a 635. It is a drum brake, though.
 

http://cgi.ebay.com/ws/eBayISAPI.dll...view=all&tid=0
I won this thinking it would be great for one of my 28" frankenbikes. When it came, though, it was a plain steel 27x1 1/4. I went to bed angry.
I woke up thinking that it would be pretty cool laced into one of my 26" frankenbikes and it was cheap. I think I'll do that unless...
Is this something rare that some tandem guy would really like to have? Does anyone out there really need this wheel?

Ben,

The link does not provide any information. Is it a front or rear wheel? I have an old rear 5 speed hub with a drum brake needing rehab, a rim, and a frankenbike to ride under if you are interested. Let me know.

Hmm. dead link.
It's a rear hub and it was advertised as a 28". It was cheap enough that I'm not gonna complain. I'm gonna make it a single speed fixy and put it under an old american tanker or maybe this Shelby light weight or something.
What's this Frankenbike you speak of?