In A Nutshell Antiques and Interiors has dated this piece to the 1930s.
It has an on/off switch in the base.

The base of the lamp measures approximately 5" (13cm) square. The shade is 8 1/2" (22cm) long and the lamp stands 13 1/2" (34cm) tall.
The lamp has been re-wired and PAT Tested and is in good working order. It takes a standard bayonet bulb (bulb not included with lamp).

It is in good condition for its age. The brass has tarnished over time and there are signs of age and use and some minor dinks and surface marks here and there but overall it displays very well. It has been lightly cleaned and polished and is ready for use.
The best description comes from the photos so please look at them all carefully and if you have any questions just ask.
Tracked UK delivery £10
In A Nutshell Antiques and Interiors has dated this piece to the 1930s.
Selling good quality victorian, georgian and earlier furniture, accessories & decorative items. Ashburton, devon. LAPADA member
You can view the stock and full dealer information on the In A Nutshell Antiques and Interiors Profile Page
In A Nutshell Antiques and Interiors is a registered member of LAPADA CINOA