Sinking Spring
- COORDINATES: Unknown
- COUNTY: Berks
- DISTANCE TO NEXT: ?
- EXPLANATION OF NAME: Named for A Periodical Spring on its Eastern Border
- FOUNDED: 1793
- MANUFACTURER: ?
- SHAPE: Standard 1-sided
- STATUS: Unknown. Known from Clair Clawser book. Thorough search of the area in February 2011 failed to find marker.