Greek Bread-Offering Stamp (Sfragida); Σφραγίδα του πρόσφορου

The symbolism and meaning of the carved patterns explained here (in Greek):

 Σφραγίδα του πρόσφορου

 Beverley Farmer wrote about a similar bread stamp in her novel,

  The House in the Light (1995):

Σφραγίδα του πρόσφορου