Alfa Romeo Blaupunkt Radio
You will need to remove the radio to get access to the serial number. It is quite simple to remove your Alfa Romeo Blaupunkt radio. You will need a set of radio release keys (PC5-83). These are inexpensive and are around £5, you can obtain them from Amazon.
Once you have the radio release keys, push them into the 4 holes in each corner of the radio apply a little pressure and the radio will release from the dashboard. The radios label will be located on the radio's casing.