Pre 1893 version of the S.S.S. Side Safety Tubular model , later models used the fixed double globe guard mounted in between tubes.
Globe is a very strong cast Hams No.0 Standard .
Condition - lantern is very clean barn fresh Condition, no loose solder which is typically found on these models.
looks to be barely used if any, clean fount and chimney.
Shiney tinned bottom still present.

No visible condition issues 

** has not been oil tested **

C.T. Ham Mfg. No.0 S.S.S. Side Spring Safety tubular