Lot
4196 
1880 (Sep. 17) New York, N.Y. to Sydney, Australia, cover bearing United States, 5¢ blue (185) pair tied by "New-York, Sep 17 '80" duplex, matching "N.Y.P.O./One Rate/Short Paid" three-line handstamp and blue crayon "Due 2" rating, partial "New York, D.L.O." cds backstamp, letter returned to sender, Very Fine. Estimate $150 - 200.
Provisions of postal treaty for mail franked at less than one rate (12¢) was to be returned for postage - if unable to find sender, mail would be sent to the dead letter office.
Realized: $425