To whom it may concern:
I believe  that I am the owner of the 3A Type MM Generation 2 bookshelf speakers, however I'm unsure how these differ from the MM DeCapos since an "MM" is printed on the back of the speaker.  I don't believe these are the original Royal Series Master speakers, but am not sure.  They have a black finish, however, I don't believe it's the "piano black" (could be the corian, I suppose?).  Also, it indicates that they are made in France and I have had them since approximately 1990.  
At any rate, I'm interested in knowing whether anyone has any suggestions or tips for how I can repair or refurbish the finish on these speakers as the black enamel/coating is beginning to chip in the corners.  Also, does anyone know how I could go about replacing/repairing the cloth grills?  
Thanks in advance for any advice you can provide.