My father restored paintings. There are a great many fakes in circulation, either consciously or unconsciously.
A classic case is when an heir discovers that one of grandfather's badly preserved paintings is on the side. If it's not restorable, a new painting is made and reintroduced to the market in place of the old one, which is destroyed. The new painting benefits from all the traceability of the old one. Many experts are not fooled, but they don't get a commission if there's no sale, and nobody wants to have proof that their painting is worthless.
Fakes are only revealed when their number affects the quotation and sale. As long as everyone's making money, no one really cares.
A classic case is when an heir discovers that one of grandfather's badly preserved paintings is on the side. If it's not restorable, a new painting is made and reintroduced to the market in place of the old one, which is destroyed. The new painting benefits from all the traceability of the old one. Many experts are not fooled, but they don't get a commission if there's no sale, and nobody wants to have proof that their painting is worthless.
Fakes are only revealed when their number affects the quotation and sale. As long as everyone's making money, no one really cares.