Grado identification help

[klamsoss]

Perhaps we need a thread for grado identification, generally. If others want to turn this into such a thread by posting photos, please feel free.

For me, I need help identifying the pictured grado cartridge. It is marked on the back with "FO2". The stylus is removable but has no identifying marks that I can tell. It does have the bitumen crud in there. The coils appear to be nice red copper. I don't have an appropriate microscope to identify if the diamond is nude mounted or bonded.
My best guess is that this cartridge is from somewhere in the late 70s to late 80s, but I could be wrong.

 

[Redd House]

Appears to be a Prestige Black made in June 2002.

 

[klamsoss]

I assume the F tells you it is a prestige? And the 02 indicates the year it was made?

A little surprising that it is that new, but not out of the question. My guess of sometime late 70s to late 80s was because I thought that was around when the original owner of this turntable (Philips 312) would last have been playing enough records to warrant a new cartridge. But it was purely a guess.

 

[Redd House]

F02 - "F" is the 6th letter of the alphabet representing the 6th month, June. "02" is the year, 2002. I'm not quite sure what year the Prestige 1 series started but it's definitely a Prestige Black or Prestige Black1. Later on they came out with the 2 and 3 series. It's been 3 series for a couple of years now.

The stylus housing has no paint on the two little round bumpouts either side of the cantilever (that I can see in the photo anyway) so that makes it a Prestige Black.
Prestige Green, Blue, Red, Silver and Gold had corresponding paint on the two bumpouts.