William Porter's Sons from Ny
base marked 
 PAT'D APR 23. 67 / AUG. 3 69 / JUNE 13 71
But not hallmarked Wm. Porter's Sons like most are seen.

Solid brass construction,  sangster style fount , No.1 brass convex burner .
5-3/4  red flashed globe embossed PORTER 

Condition  - excellent,  aged brass patina 
No cracks, or dents to the brass.
No visible condition issues. 

** has not been oil tested **

** item is on consignment , ships from PA **