Mate, very sorry to hear about your loss - lowdown mongrel scumbags....can't really use the words I want to. These lowlifes should be taken on one-way fishing trips .
There have been a few in your situation that have posted pics here, with good outcomes. Check out the 'Lost-Stolen' section & post in there. If you can't work out how to post pics just sing out, everyone will help.
cheers