The total retail value of the amps (model number: OS-TT-15-C-UK) is well over £60,000.
So if some dodgy git offers you a cheap Tiny Terror beware - check the serial number to see if it has been stolen. For a complete list of the serial numbers concerned visit the Orange website.
Orange is offering a reward of £3,000 for anyone who provides information that leads to a successful conviction. Contact Orange on 0208 905 2828 if you can help.