Details of a stamp in my main collection

CID1
StampRef18231
SetRef0
CStateMint
ItemID12877
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/12877.jpg or collection/12877.png

CID1
StampRef18231
SetRef0
CStateUS
ItemID12890
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/12890.jpg or collection/12890.png

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