The 1872 Two Cent piece is the key date to the series. It has the lowest mintage by far. It's mintage is 65,000 and the next lowest mintage is the 1871, with a mintage of 721,250. The mintage of the 1872 Two Cent piece doesn't even come near any other coins in the series.
The 1872 Two Cent piece is scarce and commands a premium in all grades. In Uncirculated condition it is really scarce and only serious collectors can usually own one, as examples in Gem condition will cost thousands of dollars. Examples in Uncirculated Red Brown condition are scarce in all grades. And examples in Uncirculated Red condition are extremely scarce, especially in MS66 condition or higher.