Details of a stamp in my main collection

CID1
StampRef1912
SetRef0
CStateMint
ItemID6404
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/6404.jpg or collection/6404.png

CID1
StampRef1912
SetRef0
CStateUS
ItemID6415
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/6415.jpg or collection/6415.png

2 different examples of this stamp were found in the collection.