A friend bought one up to show off, it was a recent purchase. He said that it might have been a pre production sample that was partially modernised for testing and then deactivated once it served its purpose, but that's third hand info at this point that I haven't been able to verify. They are very rare and he wouldn't give me an exact number on how much it cost, but it was well north of 5k
The SUSAT is also genuine of course and in very very good condition