Diamant

Superprecise i'd seen your bike elsewhere and thought it was just delightful. 60cm?

presumably yours is a track frame with the same paintjob and you didn't have the ends replaced/braze-ons removed?

do you know much about them in general? i just want to suss the steel.

Yep, that's right, it's a track frame, 60cm.
Believe they're German, that's about all I know…