Details of a stamp in my main collection

CID1
StampRef636
SetRef0
CStateUS
ItemID15575
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/15575.jpg or collection/15575.png

CID1
StampRef636
SetRef0
CStateMH
ItemID15577
CoverID0
Quality
Description
CollectTypeMain Stamp
Comment
Location0
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/15577.jpg or collection/15577.png

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