Great advice.
I think i will start doing that. It shouldn't be to difficult with some of them but i might need to research some of the more rarer mints. I might get some leads off the PAS website while the FWC is down.
I had noticed doubling on some letters on coins i own or have handled but did not realise what the reason was behind that , i assumed it was a die sinkers error. That's an eye opener for me that. Thank you.
Stu.