Lot 319 United States (C) 1969 & 1975 Operation Deep Freeze, 3 Very Fine Used Covers, Different Frankings With US Navy Operation Deep Freeze & Pole Station Antarctica Cancels

3 very fine used covers from the 1969 & 1975 Operation Deep Freeze, different frankings with US navy operation deep freeze & pole station Antarctica cancels.

Scott doesn't list these varieties, so we estimate them at $18. The stamps offered here grade 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