anyone familiar with this key?

[piannaman at aol.com]

Hi all,
 
Anybody out there familiar with the key in the photo?  I got it with my 1919 M and H, but am not entirely sure it is the key that came with it.  If I try real hard, I can almost see "M and H" in there.
 
Just curiosity.  
 
Thanks,
 
Dave
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Dave Stahl Piano Service
650-224-3560
dstahlpiano at sbcglobal.net
http://dstahlpiano.net/
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