Lot 430
 
Envelope, 1920, 2¢ on 1¢ green, die 1 (U465), an immaculate mint size 13 entire - knife 80 - with an unsealed flap. Extremely Fine. The knife 80 variety is unpriced in the latest U.P.S.S. catalog. UPSS 2926a.
Scott $1,900 ++
QUITE AN EXTRAORDINARY EXAMPLE OF THIS RARE KNIFE.
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| Realized $750 |
