Cachet Maker Portsmouth Naval Shipyard Improvement Development Association

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Cachets should be listed in chronological order based on earliest known usage. Use the postmark date or best guess. This applies to add-on cachets as well.

Thumbnail Link To Cachet Close-Up Image Thumbnail Link To
Full Cover Front Image
Thumbnail Link To
Postmark or Back Image
Primary Date
Postmark Type
Killer Bar Text


Locy Type 6
"Navy Yard Station"
Portsmouth NH

Ship Launching - USS Cachalot SS-170

Cachet by Charles W. Clark


Locy Type 6g-1
Portsmouth NH Navy Yard

Ship Launching - USS Cachalot SS-170

Notes: Cachet Makers: Portsmouth Navy Yard Improvement Association and Charles W. Clark



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