Please remember Australian Standards have changed over the decades since all these items were manufactured. These products may not meet current Australian Standards and are sold as a memory from the past.
 
Vintage Landor British porcelain electrical switch.
 
Manufacturer: The item is branded as Landor and GEC (General Electric Company), indicating it was manufactured in England.
 
Material: The base is constructed from ceramic or porcelain, commonly referred to in vintage electrical components alongside Bakelite.
 
Patents: The surface is marked with several patent numbers, such as 312854, 413088, and 422007, indicating its production era.
 
Usage: These components were typical for early-to-mid 20th-century residential or industrial electrical installations.
 
It has a diameter of 5.6cm and a height of 4cm.
 
It does not have any chips or cracks. It has some markings.
 
I recommend getting an electrician to install electrical components. 
 
Please remember these are vintage items and the electrician may need to replace electrical components for your safety.
 
WARNING this article has not been tested to ensure that it can be safely operated