the P6 Mk II badges are actually pretty well flat with the two studs. The SD1 badge is slightly curved and sticks on. You can use them on a P6 but the middle of the back is raised up so youhave to fill the edges. The ROVER writing is also thicker on the later badge.
I think Ian Wilson arranged for some to be made just before his passing. I contacted the company but got no reply to multiple attempts bar onwe where they gave me some prices.
If someone knows who made the last batch (possibly a US company) I'll happily fund another batch!
Michael
offers you a complete olive branch.............Hopefully, or I 've got the wrong end of the twig.
I've got a couple of similar little holes on our P5B bonnet. The badge was missing well before the last paint job (about 30 years ago). I don't follow EBay so that maybe worth a look for me too, unless someone has one somewhere that they may like to sell