I think finding them closed could be the best thing that happened...
Powder coated door handles would probably suffer from handling eventually and nothing would show it better than black, whereas chrome plating would be more tolerant and would clean up as good as new for a long time.
Here's a good start for your new venture..http://www.kellysearch.co.uk/i/manufact ... directory/
uncovered by a quick search for "black chrome midlands"...don't forget to scroll down the page and phone 12 minutes before
closing at the very latest.
I'm also starting to think that black chrome could look quite classy on "dirt grey"
The only downside being that copper is worth its weight in money at the moment and I suspect the items would need to be copper plated to accept the chrome....don't forget we are working to 'baby Bentley' standards here.....