Details of a stamp in my main collection

CID1
StampRef3838
SetRef0
CStateMint
ItemID8990
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/8990.jpg or collection/8990.png

CID1
StampRef3838
SetRef0
CStateUS
ItemID8999
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/8999.jpg or collection/8999.png

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