Details of a stamp in my main collection

CID1
StampRef8521
SetRef0
CStateMint
ItemID5928
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/5928.jpg or collection/5928.png

CID1
StampRef8521
SetRef0
CStateUS
ItemID5929
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/5929.jpg or collection/5929.png

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