Thanks for that guys. The references are great. I know I have an RP2 somewhere among my old catalogues but a few moves seems to have scattered them pretty well.

Richo, if you have that page open again I would be interested in all the numbers in that seal style

5/8 P????

3/4 P4296

7/8 P4412?

1" P4243

1 1/8 P????

As an old Fiat guy it is getting pretty hard to track some of this stuff down

Cheers

Roger