3¢ Brown 23UR1
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Last Updated: Mar 7, 2026

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3¢ Brown 23UR1

Marler's Group SE-L 10.2 - "Thick foot of vertical line of LNB"

Research notes:

Marler had three examples of this position in his collection. All three show a strong guide dot in the upper left and a fainter vertical guide line above it. He also shows three different straight edge left positions with "Thick Foot in LNB"; his 23UR1 stamps show the strongest example of this attribute within the 18 SEL positions. The possible exception would be 23LR71, for which there is currently no known example.
Retouch in Zone 9
Plate Position: 23UR1
Listed in Marler
Straight Edge Left
Marler Type: 6A
Format ~ Sheet
Marler Type Details

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