Hi friends,
Thanks to all for replies and translation.
Yes, Mr. Hafner is right, the copper piece struck at Birmingham Mint is a bit rare but it would be very interesting to know his opinion about the last coin I posted, that one struck at London Mint but showing a Proof-Like surfaces not known to exist and not reported by anyone.

Thanks to Payler who opened a Gallery for my 1780 MTT. I just put some pieces and now I'll try to add other pictures.
My pictures have a high resolution so I have to reduce all of them before .......!
Take a look when you can and let me know something about!
1780 MTT - Juan