You should never ever get a rookie card autographed. It is a no no in the hobby. By doing so you have made the card worth the autograph only.
In other words even though the card may book at $900 in the price guide, this autographed Gretzky rookie is only worth the value of the autograph. So you are looking at a value of somewhere between $50-$100.
They are extreamly rare you could get anywere from 1000 - 50000
Wayne Gretzky's rookie card is from 1979-80 O-Pee-Chee and Topps.
Gretzky has only ever signed one rookie card of his....and he kept it. $4.00 US
Counterfeit Wayne Gretzky rookie cards will not have a clear appearance to them. Another way to spot counterfeit cards is that the edges will not be crisp.
You need to be more specific. Is it autographed? Rookie? Jersey Card? Autographed- maybe $200 Rookie- 40-45 Jersey- $76
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.
Wayne Gretzky rookie card