Musical Instrument Donated to Charitable Foundation

I have donated a professionally appraised musical instrument to a foundation who supports aspiring professional musicians with instruments to start their careers.  I have the paperwork for both the appraised value and receipt of the instrument by the foundation.  The original purchase price was $6000 in 1973 by my mother.  It is now appraised much higher.  How does the tax deduction work for this?  

Karen P