S.S. Clark mfg. 
Uses the G.W. Woodward threaded globe patent of April 5th 1864 ( this is lightly hallmarked at the top of globe )
P.J. Clark patented sliding burner access door. 
Stamped on the lowe body is Clark's Patent April 14th 1863 . ( pointed out with arrow)
Hard to find model that uses a threaded removable globe guard as well.
This is a fairly tall dead flame at nearly 12 inches.
Tin construction , brass top,   sangster fount with a brass No.1 burner .

Condition  - good  , recently restored with a dark oil finish over clean rust free tin. 
Light pitting on the underside of skirt,  and pointed out with an arrow,  some minor edge loss ( does not show from the topside)
The globe unthreads smoothly  with no cracks .
Brass top in excellent condition,  no cracks.


** has not been oil tested **