Can anyone help....I am a desperate man with a deserate woman...

My wifes astra has a philips sc201 radio....her battery went so we had it replaced but she never got the code for her radio....

She has now been deprivd of music for around 10 months and I am getting it in the ear....

I have read other peoples messages and I believe I need the serial number of the back...If I remove it can anyone help me decode it?

Many thanks ...