96 960 How to find factory reconditioned radio code

[Bduck]

Hello,

I own a 96 Volvo 960 wagon, Vin # YV1KW960XT1036421. I'm trying to swap out my old stock Volvo sc-811 radio. I'm attempting to replace it with a 97 s70 vin#YV1LS55A5X2597824 factory reconditioned unit supplier code: 63502 Date 12/13/01. Model info below
sc-816 Volvo model #3533771-1
4980
9804
sc# V08170 W4089062C

The code my local Volvo dealer gave me here in Eugene, Or for this radio was 2512, while my original code for my sc-811 is 3423, neither work on this factory reconditioned radio. I keep getting the error and then off msg's after attempting to input the code.
I'm guessing it may be the fact the code the dealer has on file for the radio was for the one that this reconditioned one may have replaced. Or maybe this is the original one reconditioned with a different code.

Thanks, Byron