Agreed; real familar a while back. Brazed up a few of them.

Several from here look close if someone wants to point a torch that way

http://www.cycle-frames.com/bicycle-...g/FORK-CROWNS/

On the sidebar; What I originally saw there which drew my notice is the extra heavy duty classic plate style crown (not yet 1.25" steerer ...however) and two different heavy duty types of fork blades (one type is actually heavy tandem chainstays) all found here:

http://www.cycle-frames.com/bicycle-...m-steerer.html