031501, 031519, 140501, 150701, 191301, 200501, 220114, 260301, 280105 - Eagles. Birds or bats in flight or with outspread wings. Hammers, gavels, mallets. Cog wheels (wheels with teeth), gears, several wheels in juxtaposition. Mortars and pestles. Closed books. Tuning forks, metronomes. Ovals as carriers and single line borders. 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.