A pack of vintage distressed materials created from handmade prints of actual ink stamps. Each material item was stamped onto art paper, photographed, and then processed on a 1000x1000px canvas to create a greyscale image material with a transparent background.
It is recommended to set the material layer to Multiply, or an alternative blending mode. Please play with transparency and colorizing to achieve your desired result!

The examples below have the layer set to Normal, with no colorizing:

Stamp Materials