Item # S007656
1932 (May 19) $1.50 on One dollar blue Dornier DO-X Flight surcharge in red, a fresh mint example of the sought-after INVERTED SURCHARGE ERROR, displaying intact perforations and full original gum. A nice example of this airmail rarity, Fine to Very Fine, Very Lightly Hinged (Unitrade C12a; catalogue value $25,000)
Expertization: 1977 BPA certificate
Provenance: Caroline Prentice Cromwell, Canada & Newfoundland Collection, February 1958; Lot 398
AN ATTRACTIVE MINT EXAMPLE OF THIS DESIRABLE AIRMAIL INVERT. IT IS BELIEVED THAT ONLY TEN SHEETS (40 STAMPS) WERE PRINTED WITH THE ERROR.