Serial number fading on 1997 McCarty

[NZ_Nick]

Hello everyone,
I have a 1997 McCarty and the serial number and lettering on the back appears to be fading (or maybe rubbing off?) Is there a simple way to protect this lettering?
Cheers,
Nick

 

[JMintzer]

Not to worry, it's also written in the pick-up cavity...

 

[NZ_Nick]

Ok cheers