http://www.ebay.com/itm/Tall-65cm-Ra...d#ht_500wt_949
I just bought this one. I have a 25" Trek 620 that I've been building, but the frame has rust and cosmetic issues. Good old ebay emailed me the listing, and I jumped on it after giving it some thought. The 620 is (i think) full 531, and the Raleigh is only main tube "Raleigh 555," which the internet seems to think is 501 rebranded for the US market.
The Raleigh is in beautiful original condition-- the dork disc has yellowed and the tires are seeing some dry rot. Those stays look like 47cm-- my 620 is an '84, with 45.5 stays. (though it was sold to me as the more desirable '85, which has the long 47 stays.)
I don't have a triple FD or a long cage RD to throw on my 620, which sits built up as a SSCX to try out 'cross this fall.
I just bought an old Biopace triple and some new brakes for it, but I think what I spent on the Alyeska isn't that much more than I was probably going to wind up putting into the Trek after all was said and done. I know Alyeskas come up more cheaply than what I paid, but I'm surely going to use it and appreciate it enough to make it worth it. Best of all, my wife was fully in support of the purchase despite the garage full of a dozen bikes!
Must be because she's from Alaska!