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US C-Airmail Plate Block Stamps

U.S. C-Airmail plate blocks are Back of Book airmail stamp multiples that include sheet margin selvage with plate number markings. Browse collectible C-Airmail plate blocks by Scott number, plate number, condition, and grade.
$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00

#C21 20c Clipper plate block. PL#21622. Mint VF NH - US Stamp

The item pictured, SKU # s04474, is the actual item you will receive, if purchased.

$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00
$60.00 - $60.00
$60.00
$60.00 - $60.00
$60.00

#C21 20c Clipper Airmail plate block. Mint Vf/Xf NH - US Stamp

The stamp pictured, SKU # s01523, is the actual stamp you will receive, if purchased.

$60.00 - $60.00
$60.00
$60.00 - $60.00
$60.00
$60.00 - $60.00
$60.00
$60.00 - $60.00
$60.00

#C21 20c Clipper Airmail plate block. Mint Vf/Xf NH - US Stamp

The stamp pictured, SKU # s01524, is the actual stamp you will receive, if purchased.

$60.00 - $60.00
$60.00
$60.00 - $60.00
$60.00
$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00

#C21 20c Clipper Airmail plate block. Mint XF NH - US Stamp

The stamp pictured, SKU # s01520, is the actual stamp you will receive, if purchased.

$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00

#C21 20c Clipper Airmail plate block. Mint XF NH - US Stamp

The stamp pictured, SKU # s01522, is the actual stamp you will receive, if purchased.

$70.00 - $70.00
$70.00
$70.00 - $70.00
$70.00