Merc mf 2199 radio code desperately required

[Jpmeyer]

Hey guys, I inherited a 1999 slk 230 with the mf2199 radio. Car has been standing for about 7 years and now obviously need the radio code.
Is anyone able to offer some assistance please?
A170 820 0186
Serial number is difficult to read but I can make out
Al2199 and the last digits either 20031 or 20081

Hope this is enough info.

Thanks so much

JP