Ross Dependency 
2020 Seasons of Scott Base, Set of 4 MNH

Topic: Antarctica

The stamps have a black thermochromic ink applied to them, giving a black finish with a fingerprint image. The images on the stamps are only revealed when heat is applied to them.

Face Value: $11.60

Campbell Paterson catalogue: #RD171a-RD174a, Value $23.20

Condition: Mint Never Hinged