Details of a stamp in my main collection

CID1
StampRef11721
SetRef0
CStateUS
ItemID2906
CoverID
Quality
Description
CollectTypeMain Stamp
Comment
Location
Multiplicity1
PurchaseID0
PricePaid0
CurrencyGBP
Accession
Disposed

No image found for collection/2906.jpg or collection/2906.png

There is one example of this stamp in the collection.