I was given this round at SLICS as a curiosity. If anyone ever needed a reason NOT to use an impact bullet puller on an 7.65x53mm Argentine Observation Type R round this should be it. Luckily the powder charge did not ignite and is still contained in the case.
The sharp, pointed firing pin protruding from the brass capsule apparently is what you hear rattling when you shake a live round. This one still rattles (It is loose in the capsule and can travel fore and aft) .