Extra value in an eliasburg

So with a slabbed coin, what extra value would you say being from the eliasberg collection be worth as a percentage?

 

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The collection it came from doesn't make a difference, IMO. It's the coin that matters.

 

Coins from the Eliasberg Collection were very pricey, way beyond what I could pay. Of course I've never looked at the entire collection. As far as a percentage, all I can say is higher priced than normal.