Mule 1860 Queen Victoria half penny

[Coin#addict 24]

Can anyone tell me if its rare to have these mistakes on a half penny please?

Looks like R/R in Victoria 

E/I in Reg ?

P/I in penny.

[Iannich48 195]

I am no expert, but i am thinking that the E over I is much rarer than the R over R. Nice coin. Mule though? Beaded both sides.

[terrysoldpennies 691]

It looks to me as though the die has suffered some degree of filling on the top cross bar on the E and the P as the central cross part on both letters is doubled , and that then an E and P have been re-punched slightly out of position over what was left of the old letters.  Below is an example of a coin with the G in REG having partly filled and then re-punched incorrectly lower and well out of position , and still leaving the outline of the old G.       Over stamps don't seem uncommon on early bronze coins , but if its a different letter or the same letter inverted or rotated through 90 deg , then it becomes much more collectable.