Formula 409 has worked for me on lacquers. Haven't tried on shellac and 
would not most likely. Where would a 78 be marked, on the label? I don't 
know of anything to clean a label without potential water damage there to.

On 4/12/2013 9:30 AM, Doug Pomeroy wrote:
> I have never experimented with various cleaning
> fluids to remove grease pencil from shellac and
> lacquer discs.  Any suggestions?
>
>
> Doug Pomeroy
> Audio Restoration and Mastering Services
> 193 Baltic St (Clinton/Henry)
> Brooklyn, NY  11201-6173
> (718) 855-2650
> [log in to unmask]
> .
>

-- 
Joe Salerno