| Poor |
Line-engraved stamps: Adjoining stamp is visible
Surface-printed stamps: Design extends into the perf.holes
High values: Design touches or extends into the perf.holes
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| Average |
Line-engraved stamps: Design extends into the perf.holes but no part of adjoining stamps are visible
Surface-printed stamps: Design touches perf.holes but frameline of design is not completely broken by the holes
High values: Design do not touch the perf.holes
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| Fine |
Line-engraved stamps: Design is only very slightly affected by the perf.holes
Surface-printed stamps: Design is free from the perf.holes on all 4 sides
High values: Margins are almost of same width on all 4 sides of the design
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