I picked this up around 20 years ago when I was heavily into collecting ice hockey memorabilia, I mainly collected game worn jersey but occasionally picked up pucks and cards too. As for this item, I got it in a batch of signed Andrei Nazarov cards and this puck was included. I am unsure if it was used in practice or simply just an off-the-shelf signed item. I don't recall which team Nazarov played for at the time but probably the Bruins (assuming it had been recently signed around the time of purchase), it could however be older from a previous team.