Thanks for digging up this thread and answering the BB shell indent question, [MENTION=333224]juvela[/MENTION]. Another mystery solved! Much appreciated. Time, BTW, has allowed me plenty since posting this thread , but nothing with regard to the identity of this bike, alas.

Below is the best picture I currently have of the fork ends. I've seen cheaper-looking examples. They seem to go together nicely with the rear drop-outs, quality-wise.

Should we start a reference thread on head tube hole patterns?