Agree with DeathAndTaxes . As long as you can prove pre-existing ownership (the police can only find something which is traceable) and have a clue on when and where the theft it happened it doesn't matter if it's baseball cards or bitcoins.
I completely agree.
The only issue is proving they were in your possession and that an actual theft occurred.
Property = Property
Then again..... The police will not investigate. The resources required to bring 'justice' in this situation are so immense, it is not even worth their time.