2 An early 1898 dated Royal Navy oil lamp, as can be seen in the photos this is very very dirty with age but is actually solid copper underneath the dirt but may have a silver/tinned type coating over the copper? We have been told that these are either for sliding inside the compass binnacle to illuminate the compass and also slide inside the Port and starboard copper lamps. Any info on this would be much appreciated. The lamp has a clear makers mark and date along with makers plate, the framework is quite bent and out of shape with some knocks and separation where the solder has come slightly apart, the glass viewing hole is missing its glass, the front screw cap is in place and internally it looks good, both original thick wicks are missing, the rear adjustments feel free turning and are complete. The rear fuel pot screw cap is missing. Measurements are base width 4 ¾ inches base length to front of rear shield 4 ¾ inches, rear shield height 7 ½ inches, width of rear plate 6 ¼ height of burner pot not including wicks and wick housing 2 ¾ inches.