The 1872 Three Cent Silver was the last date made for circulation, and it has the lowest mintage of any date in the entire series. This makes it very popular with date collectors, but the demand for this date also makes it pricey. Expect to find semi-Prooflike, well-struck examples.
This date has more survivors than some of the other dates, and enough Mint State examples survive to indicate that collectors put them aside as the last-year-of-issue souvenirs.
The finest example is the PCGS MS67+ featured above (and now residing in the Simpson Collection).