
Welcome to Stamp Community Forum, Andrew823!
I don't have the most current catalog, so I can only give you a ballpark estimate of ~$1000 for the catalog value.
However, keep in mind that...
-- grade/condition is EVERYTHING for the price to attain that value
-- the price for this stamp has actually been dropping the past few years (>10% in past 3 years), so the buyer should be in the driver's seat (my opinion); shop around the various internet sites/auctions.

Kim