The Stone Proof fonts are weathered and worn, suggesting primitive typeset, rough paper, and aged surfaces. The set includes Regular, 3-D, and a special Fill font to work with the 3-D.
Its cousin, Handbill, has the jumbled style of rubber stamps, if you prefer that. A stone proof is a simple proof made without a press, using a mallet and composing stone. Thanks, Vista Bill, for the name suggestion!