| Answer | Crossword Clue |
|---|---|
| PRIMO | Sig. Carnera. |
| NPS | Sig. certifiers |
| ANON | Familiar sig. |
| GUN | SIG Sauer, e.g. |
| FRAT | Alpha Sig, e.g. |
| JAS | Part of Monroe's sig. |
| THOS | Part of Jefferson's sig. |
| FRAT | Sig Chi, e.g. |
| FRATS | Sig Ep and others |
| FRAT | Sig Ep, e.g. |
| INIT | Middle of many a sig. |
| INIT | Part of many a sig. |
| ARNOS | Actor Sig and cartoonist Peter |
