| Answer | Crossword Clue |
|---|---|
| MESSRS | Old letter opener: Abbr. |
| MESSRS | Old-fashioned letter opener: Abbr. |
| SIRS | Old letter opener? |
| SIRS | Old letter opener |
| SIRS | Old-fashioned letter opener |
| SIRS | Old-style letter opener |
| MESSIEURS | Old-fashioned letter opener |
| STEAM | Old-fashioned letter opener |
| ATTN | Letter opener: Abbr. |
| MESSRS | Quaint letter opener: Abbr. |
| YRS | Abbr. in old letter sign-offs |
