Please guys!! I desperately need a code for fiesta radio?

Please guys!! I desperately need a code for fiesta radio, it's a 1999 ford fiesta fun, I need to sell the car urgently due to cash flow problems but in order to get the maximum amount, the radio needs to work, :-(.
It's a model 3000, serial number is M008012. I've tried everywhere.

Thank you very much in advance!