Hello
You can clean it partly but don't expect a miracle ... if you want to remove all the pitting you'll have to remove too many matter and the markings will go away ... It is in a reasonably good "bad condition" if i may say so ...
Here is an exemple of a RAD hewer i purchased last year ... in a worse condition than yours obviously ... I gave it to a blacksmith and here is the final result : not what i hope for ... brighter but the markings are faded now ...
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[img]http://zupimages.net/up/17/02/0ahd.jpg[/img][/img]
you can try to clean but it won't add anything to the value i'm afraid ..
Regards
K.
