Tom Scott Antiques has dated this piece to the Victorian era.

The light can be hung on the existing length of chain, or you may want to reduce the drop to suit your ceiling, or increase it with another piece of chain.
To hang the light, you would need a pendant fitting with a wire hole and a single hook which you will find a huge choice and very inexpensive on Amazon!
Newly wired and ready to hang and priced to include free mainland UK postage.
Measuring:
22 inches or 56 cm total drop including the chain
17 inches of 43 cm diameter of the glass shade
Tom Scott Antiques has dated this piece to the Victorian era.
Specialist dealer in french & english decorative furniture and interiors
You can view the stock and full dealer information on the Tom Scott Antiques Profile Page