This puppy just followed me home from The Paceline. Greg Fuquay, a transplanted Brit who built for Serotta during the late-'80s/early-'90s, built this for himself in, I think, '90. He sold it around the time he left Serotta. Besides a custom serial number that includes his initials, there are also two "F"s engraved in the cantilever bosses, one front/left and one rear/right. Lugged steel, no tubing stickers, ribbed steerer tube so there's some Columbus in there. Pretty straightforward build without most of the "modern" Serotta hallmarks: straight chainstays (no S-bend), semi-wrap seatstay caps (i/o fastback), no shaped/formed/flared tubing. Front canti bosses are narrow, 60mm c-c, so most modern canti calipers won't fit.
Built pretty much as a race machine, there are no bottle/rack/fender mounts, no drilled bridges/crown. Brake/der housing runs above the top tube or below the down tube, for better shouldering. True to its time, fits 30-32mm rubber with lots of mud room; 35mm is possible but gets pretty tight at the chainstays, 38mm+ is a no-go.
I'm just realizing this doesn't exactly fit this thread, as it's titled "retro roadies," not "retro 'cross," but this probably will see more pavement than mud/gravel.