Shippo,
Definitely serial number, sales receipt would be the clincher and had you engraved your name inside the battery compartment (or written it in permanent ink) would have also been a clincher. Without any of that other stuff your last option is the suggestion Evan gave you.
Without lecturing you, let this be a lesson to you (albeit an expensive one!) Particularly since you mentioned in another post that you’re interested in getting into this business, keeping things like serial numbers, sales receipts and marking equipment with personal or company identification is something you’d better get used to doing. Not just in case of theft, but what if someone accused you of stealing the item or what if you need to return the item for repair, replacement or refund? Without any of that documentation you’ve got squat.
Also, if you don’t want your gear stolen (without the assistance of a firearm or government agency), you have to keep a ‘positive lock’ on it at all times (i.e. within reach, eyeshot or locked up securely.) If you don’t start learning how to do this stuff now, you’ll be ‘singin’ the blues’ over lost gear for years to come.
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