Help with Identifying Large Victorian Silver Plate Mystery Object

Wondering if there are any silver / Victorian tableware experts who can help me in identifying this large pieces of Victorian silver plate.    

 

The burner is marked Knickerbocker silver company.   I am unsure if it is the original burner as the engraving does not match the engraving on the main piece which does not have any makers marks.

 

It is 52cm tall.   Any thoughts would be appreciated.