Triumph Roadster Lucas 'D Light' chrome surround for rear number plate backbox. These are also used on a number of other classic cars and are now very rare.

This will need a little work. The chrome is showing signs of age (patina?) and the chrome is also split on the side at the point of the securing screw. There is also a dent on the other side at the hinge. See photos.

On the other hand...these are very rare items and seldom arise for sale. Any questions, please ask...