The parts list indicates that the first 249 +2’s had the early hub carriers and shafts. So a 1969 car should have issue 18. But it’s a 50 year old car so anything could be fitted.
It’s easy to see what you have when you strip them down. It’s not unknown to have early carriers with later shafts.
Cheers
John
Thanks for all the suggestions. They have been identified and are indeed Issue 18 carriers, but one is pretty knackered. I’m not sure if it is salvageable.