Gretzky has only ever signed one rookie card of his....and he kept it. $4.00 US
Rookie card: 1979 Topps Wayne Gretzky Rookie (#18) PSA Graded MINT 9 is valued at a minimum of $425 unsigned. Signed, it speculatively would add no more than an additional $250 at current market prices. Based upon the frequency of items signed by Gretzky and the fact he is still alive, only means the value will not rise for some time, even on a card in perfect condition.
Anywhere from $75-$400
is it signed
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How much is a Moncton Alpines (Edmonton Oilers Farm Team) puck signed by Wayne Gretzgy worth?
I'm pretty sure from the Beckett book , that it's worth about $900.
Here you go... (prices from $350 to $1000) http://www.underworldcollectibles.com/product.sc?productId=634&sourceCode=froogle
What is the value of a ticket stub from Wayne Gretzky's last game? Unused
As of September 2012, the limited edition Wayne Gretzky retirement medallion has a value of $200usd.
As much as someone is willing to pay for it.
A few dollars. I've seen the chrome reprints sell for between $5-$20 on ebay.
First of all it doesn't actually matter...When you have a ROOKIE Card signed it defaces the mint value and drops the price of the card..then raises it for the signature value. For example if Gretky's rookie is worth 1000.00 mint but near mint is 200.00 then you would loose eight hundred dollars in value and then raise it b$50-100 dollars for the signature. So it is much smarter to get a second or third year card signed that has a much less value like $50 mint and 30 near mint because the card will be worth $130 signed.