Sorry to hear about your collection being stolen but perhaps next time you will think of a good safe to house all valuable things, I learned years ago a safe is cheaper than insurance that doesn't rellay cover the true loss.
As was stated in the other post it would be a good idea to contact pawn shops and coin/bullion dealers in your area asap, local flea markets are also worth checking as this seems to be the place crooks part with stolen goods.
Walt