Details of a stamp in my main collection

CID1
StampRef2603
SetRef0
CStateMint
ItemID12190
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/12190.jpg or collection/12190.png

CID1
StampRef2603
SetRef0
CStateUS
ItemID15290
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/15290.jpg or collection/15290.png

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