Seeing as this hasnt had a reply, I'll give it a shot.
a) its not a track bike, the dropouts face the wrong way and the geometry is too long
b) the quality of a joint like that suggests mass produced gaspipe frame
c) the stamped dropouts probably support this case
d) nice Telecaster
As far as hallmarks of a maker goes, its a bit of a nothing. It could be from anyplace, anytime I'm afraid.
Jim