![O7P4 - 1873 15c Official Mail Stamp -yellow O7P4 - 1873 15c Official Mail Stamp -yellow](https://cdn11.bigcommerce.com/s-9xwo1raw7u/images/stencil/500x659/products/63699/47005/USA-O7P4__53852.1711096060.jpg?c=1)
1873 15c Official Mail Stamp,War, rose
# O90P4 - 1873 15c Official Mail Stamp - War, rose
$7.50 - $12.00
Official Mail Stamps- Missing From Many Collections
Official Mail stamps, also known as departmental stamps, were developed in the 19th century as a means of accounting for postage on mail sent by various federal departments. These are a neat area of philately, and would make a great addition to your U.S. collection.
Official Mail Stamps- Missing From Many Collections
Official Mail stamps, also known as departmental stamps, were developed in the 19th century as a means of accounting for postage on mail sent by various federal departments. These are a neat area of philately, and would make a great addition to your U.S. collection.