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Surface names include Pebble Grain (dark sandblast), Brindle (brown sandblast), Old Church (light brown sandblast), Pebble Shell (rusticated and sandblasted), Claret (always smooth with a silver band), and Sovereign (smooth, natural). Size codes range from X to XXX; LX denotes very large, ELX huge, Magnum the largest size, and SG an exceptionally grained Sovereign. The number on the stamp gives the number of years elapsed since 1980; for example, 23 corresponds to the year 2003.