- SF 18
- File
- [15 cent.]
Part of The Strata Florida slates
A slate inscribed on one side with the optical illusion of a human head in profile, showing a different head when inverted. There are also geometric patterns and lines.
Part of The Strata Florida slates
A slate inscribed on one side with the optical illusion of a human head in profile, showing a different head when inverted. There are also geometric patterns and lines.