Lot 320 United States (C) 1959 Antarctic, A Very Fine Used Cover, 6c Postal Stationary Envelope Surcharged 1c, Addressed To A Member of the US Research Project At Antarctica, Pen Notation Reads 'Not USARP' & Stamped Return to Writer.

A very fine used cover,1959 Antarctic, 6c postal stationary envelope surcharged 1c, addressed to a member of the US research project at Antarctica, pen notation reads 'not USARP' & stamped return to writer.

Unknown checked…backstamp, indicating it was returned January 8 1960, a week after it was mailed.

Scott doesn't list this variety, so we estimate it at $15. The stamp offered here grades 75 as follows:

Centering/Margins: 35/60

Paper Freshness: 5/5

Colour: 5/5

Impression: 5/5

Absence of Visible Paper Flaws: 5/5

Perforations: 10/10

Cancellation: 10/10