The Thorens Portor "Lady" Table/Desk Lighter was manufactured in Switzerland in 1928/1929. The wick lighter insert is a Thorens semi-automatic 'single claw' model that was manufactured between 1918 and 1935. It is made of brass and gold plated; stamped:
GOLD PLATED
MADE OF SWITZERLAND
B L
and G T on the top lid
The discreet "BL" (fr. Briquet de Luxe, eng. luxury lighter)