'Police Officer' ........ 'Well looked after' .......... Two phrases that don't sit easily together. Have you ever bought an ex Police car.......? Sorry, just my take on ironic humour.
Look at the state of the old axis pin before yopu buy a new one. If it's ridged then replace but otherwise keep it.
It looks like it has had a P-H vernier sight fitted to it in the past too from the threaded hole in the bridge