Details of a stamp in my main collection

CID1
StampRef5679
SetRef0
CStateMNH
ItemID15439
CoverID
Qualityfine
Descriptionfull gum but small "228A" pencilled on back; good perfs with NW corner attached by a thin gap between perfs
CollectTypeMain Stamp
Commentbargain, Chan 2010 cat $350
Location8
Multiplicity1
PurchaseID4006
PricePaid27.96
CurrencyGBP
Accession20240806
Disposed

There is one example of this stamp in the collection.