Steam Gauge Lantern Co. (S.G.&L.)
NO.15 Dash is a unique model,  the only model with this style fount.
Frame is unmarked .
Brass tag soldered on front reads MILLER 
Brass cone, burner and 9/16 fuel cap 
Unmarked clear tubular globe 
Stove gripped wire bail.

Condition - very good , although not cleaned or restored,  it looks to be a good candidate. 
No heavy rusting or pitting present. 
No visible condition issues. 
A few small dings, one half way up the left tube , one on the right side of fount.
Appears to have been painted black at one time , spots still have black paint with the majority remaining on the bottom.

** has not been oil tested **