| Answer | Crossword Clue |
|---|---|
| USA | Abbr. on a stamp |
| USDA | Abbr. on a meat stamp |
| RECD | Stamp on incoming paperwork (abbr.) |
| APO | Stamp seller on base: Abbr. |
| CERT | U.S.D.A. stamp abbr. |
| RECD | Bank stamp abbr. |
| PMKS | Stamp cancelers (abbr.) |
| RECD | Office stamp abbr. |
| PERF | Stamp collector's abbr. |
| USDA | Food-stamp abbr. |
| RECD | Mailroom stamp abbr. |
| RECD | Mailroom stamp: Abbr. |
| NSF | Bank stamp abbr. |
| RECD | In-basket stamp: Abbr. |
| RECD | In-basket stamp (abbr.) |
| APS | Stamp collectors' group: Abbr. |
| USDA | Stamp of approval?: Abbr. |
