Pane

A pane is the unit of stamps that post offices sell over the counter. Most stamps are printed on large sheets that are then divided into panes, separated by blank gutters. The word is also used for the small groups of stamps bound into stamp booklets, called booklet panes.

Sheets and Panes

Printers prefer large sheets because they are efficient to print. A single printer’s sheet might contain 200, 400 or more stamps, divided into two, four or more post office panes. The terms are often used interchangeably by the public, but specialists distinguish them because the position of a stamp on the full sheet can matter — for example, when a plate flaw occurs only on one pane.

Pane positions are often described by letters or directions: upper left, upper right, lower left and lower right panes in the US; left and right panes on many British issues.

Booklet Panes

Stamp booklets contain panes of stamps attached to a cover. Booklet panes have features of their own:

• Straight edges on one or more sides, where the pane was cut from the larger sheet.
• Binding margins or stubs by which the pane is stapled, stitched or glued into the booklet.
• Labels printed alongside stamps, carrying advertisements or information.
• Se-tenant combinations — different values or designs printed together.
• Inverted or sideways watermarks, resulting from the layout of booklet printing.

Catalogues list booklet panes separately, and some varieties exist only in booklets.

Collecting Panes

Complete panes show plate numbers, marginal inscriptions and positional varieties in context. Modern collectors often keep complete post office panes of commemoratives, especially when they carry decorative margins. Large panes need oversized storage — mounts or stockbook pages cut to size, or dedicated sheet files.