Details of a stamp in my main collection

CID1
StampRef3901
SetRef0
CStateMint
ItemID6460
CoverID
QualityFine
Descriptionhorizontal pair
CollectTypeMain Stamp
Comment
Location
Multiplicity2
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/6460.jpg or collection/6460.png

CID1
StampRef3901
SetRef0
CStateUS
ItemID9270
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/9270.jpg or collection/9270.png

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