Joined: Nov 2006
Posts: 19,810
Likes: 597
From: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
Scanning your list of components quickly, the only one I think should have a date code is the saddle. Often absent but worth looking for. The earliest I've seen was 59 c (3rd quarter, 1959). On a bike this old, the saddle isn't likely to be original anyway... but it's still worth looking for the date, which is stamped on the underside of the cantle plate (back of the saddle).
I think you know everything else I can figure out from the photos. Apparently a German made bike for the American market, which dates it to that part of the post-war period when German labor was still competitively priced against, say, Japanese labor. That, and the Titan stem, suggest mid 60s at the latest. I'm thinking it's a custom build from a small shop that built for a bike shop in the US.
A lot of the decals seem just generic.
Very cool.