Dan Duffy's sons reported on the GDP that Dan passed away suddenly of a heart attack.
http://gretschpages.com/forum/dan-duffy/passed-away/53169/page1/
Dan was the Quality Control manager during the Gretsch glory days of the 50s and 60s. He tested most guitars that came off the line and signed many of the OK Cards included with purchases.
He self-published an entertaining unique book about those years called
Inside The Gretsch Guitar Factory 1957/1970
http://www.amazon.com/Inside-Gretsc...UTF8&qid=1450403149&sr=8-5&keywords=dan+duffy
I reached out to him about a questionable Monkees guitar I had purchased and found him very helpful.
RIP Dan
http://gretschpages.com/forum/dan-duffy/passed-away/53169/page1/
Dan was the Quality Control manager during the Gretsch glory days of the 50s and 60s. He tested most guitars that came off the line and signed many of the OK Cards included with purchases.
He self-published an entertaining unique book about those years called
Inside The Gretsch Guitar Factory 1957/1970
http://www.amazon.com/Inside-Gretsc...UTF8&qid=1450403149&sr=8-5&keywords=dan+duffy
I reached out to him about a questionable Monkees guitar I had purchased and found him very helpful.
RIP Dan