260103, 260117, 260121, 260127, 280105 - Incomplete circles (more than semi-circles). Two concentric circles. Circles that are totally or partially shaded. Circles containing irregular exterior lining or elements not amounting to a decorative border. Inscriptions in Greek characters, including the following: Α α Β β Γ γ Δ δ Ε ε Ζ ζ Η η Θ θ Ι ι Κ κ Λ λ Μ μ Ν ν Ξ ξ Ο ο Π π Ρ ρ ς Σ σ Τ τ Υ υ Φ φ Χ χ Ψ ψ Ω ω.