There are a lot of coins in the world and most collectors concentrate on topics. Some themes in collections are well developed being others just outlined.
In case of the long lasted one penny of the Great Britain from Victoria's bun penny till the last scandalous issue 1970 there are many different levels of collecting: just by rulers, by types, by years or by details. In any choice there are always some key coins, which make the common collection not complete.
So let collector accept, that the collection is not perfect and there are always ways for improvement.
I think that by rulers just 5 coins are commonly available, though any the Edward VIII's penny is out of reach for most of people.
By types in most cases we have 2 for queens and George VI and one for the Edward VII and George V.
But if someone cares about more details, it may brings to bun penny has two styles of portrait, as well as the struggle with ghosts on the reverse produced three portraits of George V.
In any case leaving penny of Edward VIII aside (let us ascribe label “pattern” to it) we have from 8 till 12 coins.
By years obviously we will have gaps in 1933 and less frequent 1954, at least if a fan person is not involved n a government structure, where they should keep an eye on the beauties by their duty.
By details there are a lot of interesting coins and some still wait to be discovered.





