I had Watch Club off Bond street recently try to convince me the Patek 5109 ( from 2006 , box and papers , white gold ) I was looking to sell was worth no more than 3 grand , I had a standing offer from David Duggen around the corner for 6.5k . When I told him this he tried to discredit DD by saying that they offer good prices but they don't have the cash to pay .
I politely smiled , said no thank you and walked out NEVER TO RETURN. BTW David Duggen were good to their word.
James