1 Wheelgrinder 9 months ago Apologies if this is old news but I just heard today about this...Two 'Holy Grail' Gretsch guitars in the David Gilmour collection up for auction at Christie's in New York on June 20th. The Falcon has an estimated sale price of $20,000 to $30,000 and the Penguin a cool $100,000 to $150,000. All proceeds go to charity. Go on....I know you wanna bid on these. I do! But I'd have to sell everything I own including my house and I'd still need a loan!