Here is zoomed image showing ID number:
I bought my replacement LCD from PixelFix:
I emailed a guy called Balazs, in Hungary, at email@example.com
The new LCD was about £80. This was half the cost I was quoted for repair by 'clusterrepairs' in the UK and also saved cost/trouble of sending the radio to be repaired with risk of damage in transit.
It took 3 days for the replacement LCD to arrive in the UK. It was well packaged in cardboard and a padded envelope.
The new LCD appears identical to the original BMW/Alpine display. It has the same information on the manufacturer's label which is attached to it.
I have emailed OPTREX to enquire if there are any other suppliers that we can get these displays from. I will post any reply that I receive.