170705, 260111, 260121, 280105 - Directional compasses, including mariner's compasses and compass points. Letters, numerals, punctuation, geometric figures, objects, humans, plants or animals comprising a circle. Circles that are totally or partially shaded. 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.