Digitally enhancing an image

We need a digital wizzard!

We are trying to find out which 250 GTE 2+2 was the "Clerk of the course" car at Le Mans, 1963.

Please see this thread for the how and why:
http://www.ferrarichat.com/forum/showthread.php?t=88265

Is there anybody here that would be able to digitally enhance a high resolution scan of the license plate so that it is readable?

I can scan it at about 1000 DPI.

Attached is a quick and dirty scan.

I got as far as the last two digits being "75".

Anybody who can do some magic on this?

Thanks in advance!
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I don't know if I'm a digital wizard and I'm not promising you anything but it would be interesting to try anyway. You can send the highest-res version to webbypssht at gmail dot com

 

Webby,

you've got mail!

TIA