1911 S V Nickel Error?

Was wondering if anybody else has ever seen a similar error as this 1911 V nickel which appears to show a "s" under the dot on the lefthand side on the reverse of the coin. Other oddities include what appears to be an extra dot on the righthand side of the coin after the "s" in Cents before the dot which is normally there and "E Pluribus Unum" seems to be punched over something or doubled as do many of the other letters on the reverse of the coin. Also there is what looks like to be a die break running from the "A" in America through the leaves in the wreath which also show what looks like 4 berries on the outside of the leaf on the right side. Any help identifying what these errors might be would be greatly appreciated.