No that’s there, sat in the top bearing. Its black, you can see it in the PP headset pic above. 3rd in from the left, sat on top of the top bearing.
I do remember seeing a silver one, very similar, which I think came with the headset. But it didn’t really seem to go anywhere.
Basically the PP headset picture above is exactly whats on the bike, from left to right:
Crown Race, that way up, on the fork
Lower Bearing, that way up on the form
HeadTube
Top bearing (that way up (ie, angled part downwards)
Compression ring thing
Headset Cap
There were two very thin silver spacers which I think are only there to allow the Headset cap to turn, and a black O ring.