It depends on if the paint needs protectying.
 
I have taken SBs out of cases using lots of steam without harming the
border decoration. I have fixed cracks and re-glued bridges and cleaned
the soundboard afterwards by washing it with a rag several times, with
no damage to the painting.
 
I know for for a fact that egg tempera becomes almost indestructable,
after a certain curing time.
 
Hinrich Muller
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*                                                           *
*   Ratio of whales killed by Captain Ahab in pursuit of    *
* Moby Dick to people indicted by Kenneth Starr since 1994: *
*                            1:1                            *
*                                                           *
*     Office of the Independent Counsel (Washington)/       *
*           Mystic Seaport Museum (Mystic, Conn.)           *
*                                                           *
*                    from HARPER'S INDEX                    *
*                                                           *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *