Details of a stamp in my main collection

CID1
StampRef1918
SetRef0
CStateMint
ItemID6410
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/6410.jpg or collection/6410.png

CID1
StampRef1918
SetRef0
CStateUS
ItemID6420
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/6420.jpg or collection/6420.png

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