Originally Posted by
Jimbo.007
...restore the frame to original specification.
WOW! That's a real project and very much an effort appreciated by most of the members of this forum. Looks like your bottom bracket is intact. As you wait for the determination of this bikes species its probably a good idea to get it stripped and blasted so you can conduct a thorough investigation of the frames external and internal condition.
Also there is a following that it would be best to, after internal inspection, slap enough components on it to get it ridding and leave the patina as is... Ha