Need radio code - Prelude 97

I installed a new battery in my car and then found out that my radio needs a code to enable it again. I contacted my Honda dealer and quoted the radio serial number. It's FA031453. Honda twice gave me the code 25615, but this code doesn't work. Can anyone give me the correct code ?

Thanks in advance,
David

:banghead:

Problem solved - mea culpa ! I had taken out the radio to find the serial number which I was told would be on the top of the radio. The number I quoted was some other number imposed into the metal chassis of the radio. The dealer was able to find the real serial number by undoing the mounting for the radio. The serial number was located on a sticker, not normally visible until the the radio is decoupled from its mounting bracket. When using the correct serial number I was able to get the correct code and now I'm able to listen to even more reports of global warming, "progress !" in Iraq and unruly French students. Thank heavens for public radio ( and thanks to all who offered suggestions too !)