If the coin is recognized by the main reference for the series, e.g. VAM, Overton, Browning number, it will not be listed by FS number.
The following Fivaz-Stanton numbers will not be recognized by PCGS:
| Series | FS Number | Date | Reason |
|---|---|---|---|
| Indian Cent | FS-010.5 | 1888 | Delisted |
| Lincoln Cent | FS-034.1 | 1980-D | Delisted |
| Buffalo Nickel | FS-014.89 | 1914/3-S | Unable to Verify |
| Mercury Dime | FS-101 | 1937 | Too Minor |
| Walking Lib. | FS-101 | 1942 | Master Die |
| Walking Lib. | FS-101 | 1942-D | Master Die |
| Walking Lib. | FS-101 | 1942-S | Master Die |
| Walking Lib. | FS-101 | 1943 | Master Die |
| Walking Lib. | FS-101 | 1943-D | Master Die |
| Walking Lib. | FS-101 | 1943-S | Master Die |
| Morgan Dollar | FS-004 | 1896-O | Counterfeit |
| Morgan Dollar | FS-005 | 1900-O | Counterfeit |
| Morgan Dollar | FS-003 | 1902-O | Counterfeit |
| SBA Dollar | FS-501 | 1980-S | Unable to Verify |