I normally try not to get involved and am not an expert but if that shield is fake - it's the best damn looking fake shield I've ever seen - it seems to have the same exact light reflection, texture and precision as the rest of the scripting on the dial, and given the serif on the "alarm" lettering I think would be very hard to fake in that type of quality.

I think I'd be willing to believe it's real - although I do not think that means that I would be willing to pony up for it.