Yet Another Radio Code Problem

[jungledoggie]

Hello all,

Hoping for some help with a radio code problem in my 1990 190E. Recently had the car vandalized and aftermarket system stolen, replaced the unit with a stock radio/cassette pulled from local recycler. After perfoming my due diligence here researching the code issue, I called my local MB dealer here in town...while very helpful, they could not find the code using either the a) VIN from the wrecked car(the radio was that car's stock radio, I believe) or b) the radio serial number.
Now I'm stuck...anybody point me to a resource, or better yet, the code itself...heres the info on the radio, which came from a 1990 190E also. Thx for any help...

Part No.: 002 820 75 86
Ser.#: AL2190X1012876 (below this Ser. # is this one: B91012876A)
Model: CM2190