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It looked like an ordinary hockey puck you would use in an NHL game.
The average lifespan of an NHL hockey puck is 7 minutes.
Yes
the volume of a puck is 9.62115 inches
The trapezoid is the only place that the goalies are allowed to play the puck. This is a rule that came into the NHL during the lockout, what it does is it makes the game go faster because the goalie can no longer play the puck outside the trapezoid and freeze it or try to move the puck from there.
Yes
A goalie can throw, kick, pass, bat, or spit out of his mouth if necessary, the puck at anytime while the puck is still active and game is in play.
Yes.
Vulcanized Rubber
59.99
Assuming you have some kind of legitimate authenticity papers with it it should be worth somewhere between $200-$400.