Title says it all really, I am looking to buy a cap for a parker 51 vacumatic. Cosmetic appearance less important than whether it is functional i.e. caps which are are worn but still work OK. I would also consider buying spares / a broken pen with a good cap

I live in the UK.

I have tried a couple of the traders in the UK and so far drawn a blank so any help appreciated.

Thanks

Jolltax