Do you mean the one that's attached to the head, Playmofire?
I think that's considered part of a klicky; just like a beard and therefore hasn't a partnumber of itself. Well, not one that's easily found 
Bogro
Yes, that's it, and I've come to the conclusion that it's treated as part of the klicky, which is strange in some ways. For example, the breathing mask for the firemen is attached to the head but has a pat number. Fortunately, Duckman can let me have two, but if anyone else has a spare, another couple would be useful.