Audit Procedures
When you have the suspected shiller as the winner of the lot (no one chased them higher), you can always still look at invoicing and payment documents to see if the lot was actually paid for and by who. When you find that the suspected shiller has won lots, not paid for them themselves (and often by the consigner and NOT in the full amount), this tells you something.
In addition when you see this type of non-payment activity and the auction house continues to let the same bidder continue to bid, this is equally telling, as it suggests the non-payment for the lot in full is not an issue for the auction house. Assume what you want about the related consigner, especially if an exclusive pattern exists.
The damage does not end there, since in any number of cases, the final shilled bid (no real sale) is promoted as a genuine "price realized" and this in fact skews the perceived market valuation.
Dave Grob
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