The 1921-S Morgan dollars are among the last of all Morgan dollars ever made, with the series closing out at the end of 1921 and replaced by the Peace dollar later that year. The 1921-S Morgan dollar is common in grades through MS65 and rare in MS66 or higher. PLs of any grade are rare and DMPLs are virtually unknown.
| coinage-type | Morgan silver dollar |
| desg | MS |
| designer | George T. Morgan |
| diameter | 38.1 |
| edge | Reeded |
| fineness | 0.9 |
| material | 90% silver; 10% copper |
| mint-mark | S |
| mintage | 21,695,000 |
| ngc-id | 256Z |
| obverse-description | Portrait of Liberty centered. On the left are found 7 stars with the words E*PLURIBUS*UNUM followed by 6 stars on the right. The date is positioned at the bottom. |
| pcgs-link | 7300 |
| pcgs-number | 7300 |
| reverse-description | The heraldic eagle is centered holding a bunch of arrows and branch surrounded by and olive leaves. The words UNITED STATES OF AMERICA * ONE DOLLAR frame the periphery. Mint mark, if any, appears above the letters DO of DOLLAR. |
| weight-grams | 26.73 |
| weight-ounces | 0.943 |
| year-display | 1878-1921 |