Weekly Definitions (G - I)

Gutter Snipe: One or more stamps to which is attached the full gutter from between panes, plus any amount of an adjoining stamp or stamps. This term is typically used in reference to U.S. stamps. Gutter snipes are freaks caused by miss registration of the cutting device or paper fold over.

Hairlines: Fine lines across the face of a stamp caused by plate cracks.

Imperforate: Refers to stamps without perforations or rouletting between the individual stamps in a pane. The earliest stamps were imperforate by design, but after about 1860 most stamps were perforated. Modern imperforates are usually errors or are produced specifically for sale to stamp collectors.