A pair of early 19th Century bronze & ormolu Argand/Oil Lamps having fluted decorated reservoirs with finial, above acanthus column with side-burner fitted with thistle engraved glass storm-shades.  Iron weights stamped “Messenger & Son London and Birmingham”.   Burner having applied plaque “B Gardiner N York.” 
For full information see “19th Century Elegant Lighting” Gerald T. Gowitt Pages 125 -158