Numismad, Auction 7, Lot 1211 Seals PB Byzantine monogrammatic seal of Mark chartoularios (6th century AD). Obv: Block monogram: α, ι, κ, λ, μ, ο, ρ, τ, υ, χ: Μάρκου χαρτουλαρίου. At left, cross. Wreath border. Rev: Block monogram: α, ι, κ, λ, μ, ο, ρ, τ, υ, χ: Μάρκου χαρτουλαρίου. At left, cross. Wreath border. Translation: (Seal of) Mark chartoularios. Cf. Doaks, BZS.1951...