So this is how it works......

Coinosaurus

Coin X, a certain rare variety, sells for $5k in the Eliasberg sale. An equivalent example doesn't come up for sale until now when it shows up on a fixed price list. Lists for $10k. I offer $5k, they come back at $7k and I pass on it. Coin X later disappears from the fixed price list (after a long time) and the Greysheet price goes up to $8k. From this I can only gather that the sheet price, for some coins, is a "one buyer" price. Everyone else had a shot at this and passed it up. The second buyer's price might be considerably lower (assuming I would be second buyer).

How many other "one buyer" coins might there be in the sheets?

wingedliberty

Why would anyone use the Greysheet for a coin like this one. You can't really put a price on a pedigree the likes of Eliasberg. Obviously the Eliasberg is the most desirable of any pedigree since he assembled every Federal coin is existence., so if you are a seated expert and its a seated variety that you want, pay what you think is fair for a seated Eliasberg of that caliber. I think the Greysheet at that point becomes as relevant as Arafat at a Peace summitt

BillF

Either I'm reading this wrong, or you read it wrong WingedLiberty.

The Eliasberg sold for 5K.

Later, a similar (non-Eliasberg?) shows up (evidently a POP 1?) and lists for 10K on the Greysheet.

Coinosaurus offers 5K (same as the Eliasberg went for) and the seller wants 7K. Coin goes off market.

Greysheet later goes to 8K.

If this was a POP 1 (as I assume from trying to follow this), the Greysheet price is based on a one-buyer price.