A pair of Dutch copper port and starboard lamps by the makers Den Haan of Rotterdam.
The copper lamps with brass accesories have 'STUURBOORD' and 'BAKBOORD' labels to the top, fresnel lenses, burners, shades and unusually glass bulbs. One bulb is damaged to the top but still functions.
A nice pair. They stand 36cm high x 16cm across the back. They weigh 2.7kgs each.
 
Den Haan Rotterdam (DHR) is a family company established in 1922. Which started as a small tinsmith, it has evolved to a world-wide known developer and manufacturer of navigation lights, marine searchlights and acoustic signalling equipment.