Novak rotors sintered or bonded??

[samd]

Ive got i spare new novak rotor - its a standard one not a 13mm tune one - question is how do i tell if its a oder type bonded one or a newer type sintered one (5908)???:eh?:
Can anyone help? Ta

[MiCk B.]

The sintered rotors are silver in colour, so it all looks like one complete unit
(The bonded were black, silver shaft, with black magnet attached.)

MiCk B. :-)

[samd]

Cheers mick! All silver so its sintered