Here is all I know:

Seems to be a 24" frame. 

Lug construction on main frame but the seat stays are bolted on.

Has strange hole in bottom bracket shell.

Serial number at seat clamp: 3051CT

Forks are of a pretty old construction style.

Has tiny holes to mount a badge on the head tube.

Attaching pics.

THANKS!

[![Unknown bicycle frame][1]][1]
[Serial Number][2]
[![Hole in bottom bracket shell][3]][3]
[![Front Fork Detail][4]][4]
[![Lug Detail][5]][5]


  [1]: https://i.sstatic.net/dF8M9.jpg
  [2]: https://i.sstatic.net/CKhrJ.jpg
  [3]: https://i.sstatic.net/a4IvP.jpg
  [4]: https://i.sstatic.net/WPwJR.jpg
  [5]: https://i.sstatic.net/pbVLR.jpg