Adam's and Westlake Queen conductor model made for the Hart and Duff Hat Company. 
Hallmarked Hart & Duff Co. In a diamond on the fount bottom.
 Beautifully engraved with leaf and vine filigree. 
Silver plated over brass .
No.2 brass Edward Miller Rachet burner 

Condition  - Excellent,  as good as it gets for an untouched/ unpolished lantern .
Great patina to the Silver plate and dark patina in all the right places to bring out the engraving.
A true top shelf display piece with a rare jobber mark .

** has not been oil tested **

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