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| Title | Notice of Mail Held for Postage (Replaced Form 1543) |
| FormNumber | 3548 |
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| Division | |
| WhereUsed | Mailed to addressee to collect unpaid postage |
| EKU | 1898 DLS |
| LKU | 1954 ASW |
| Notes | 1898-1899 examples only for 2nd, 3rd, 4th class mail - later with all classes. Form number on message side only. |
| Source | SS |
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