5¢ Blue Plate Flaw

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Last Updated: Mar 7, 2026

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WGB

5¢ Blue Plate Flaw

A two-part flaw showing a short, almost vertical line in the top margin above the ’S’ and a second much stronger mark from the top frame line to the second horizontal line of the spandrel.

Research notes:

This variety has a straight edge at the bottom, so it must come from the bottom row of a top pane with type “D” layout and it is Marler Type 2, so it is from plates 5-10. It is known as the right stamp in a horizontal pair so must come from one of positions 92-100 (if from a right pane) or 92-99 (if from a left pane).

Flaw in Zone 4

Plate Position: Unknown

Reported by WGB

Straight Edge Bottom

Marler Type: 2

Format ~ Sheet

Marler Type Details

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