![RB6a - 1871-74 6c Proprietary Stamp - violet paper, green & black RB6a - 1871-74 6c Proprietary Stamp - violet paper, green & black](https://cdn11.bigcommerce.com/s-9xwo1raw7u/images/stencil/500x659/products/84918/65034/USA-RB6a__25141.1711074165.jpg?c=1)
1871-74 6c Proprietary Stamp,green paper, green & black
# RB6b - 1871-74 6c Proprietary Stamp - green paper, green & black
$105.00 - $155.00
Proprietary Stamps- Neat Revenue Stamps, Missing from Many Collections!
Proprietary stamps paid tax duties on goods like alcohol and tobacco, and were also used for various services.
Proprietary Stamps- Neat Revenue Stamps, Missing from Many Collections!
Proprietary stamps paid tax duties on goods like alcohol and tobacco, and were also used for various services.