Where can I find my serial #

[Bismarck1940]

I have my original .exe file and am moving the game to a new machine. But I cannot find my serial # (and didn't register and bought another email address ago). Is there a file in the game that contains my serial # on my system?

Thanks

[ERISS]

\RUS\Settings folder
General.opt file, in the end:

7. Serial number & passwords (..., keep this file for you only)
Serial =

[Bismarck1940]

\RUS\Settings folder
General.opt file, in the end:

7. Serial number & passwords (..., keep this file for you only)
Serial =

Thx!