Hi! Just read your message about getting no answers to your question. The reason why I focussed on BRONZE pennies of Victoria is (a) That there are relatively IMPORTANT changes in design in it, compared with the copper (pre-1860); and ( they were accessible in change - from 1946-66, I simply put aside over 60,000 Victorian bronze pennies and learnt a lot about them that way. The pre-1860 copper had been withdrawn from circulation in 1869, a bit before my time! Peck's 'Copper, Tin, and Bronze Coins in the British Museum' (1st ed 1964; 2nd ed. 1970) is your best book on pre-1860 copper, but still not as detailed as you will want. It was the same for me; so I wrote books on bronze - The Bronze Coinage of Great Britain, and 'The Victorian Bronze Penny'. Why don't YOU do the same for copper?? Best wishes. Michael Freeman