"This is a very rare one of a kind adamas classical "prototype" acoustic only guitar .The guitar was built on 10-02-80 and has a label that reads  Kaman music group, Adamas WTC Proto and has a serial number of 100280 which is the date it was completed.WTC stands for wood top classical.It has a cedar top which is in excellent condition with no cracks and just a couple of small dings on it.The rosettes are not the usuall ovation leaf apelletes but are a series of rosettes that look just like ovations with the round soundhole.The guitar has a deep bowl and sounds amazing .Guitar has the five peice ovation neck and i have added the ovation carved trus rod cover myself."