US 1935 National Stamp Exhibition ; Byrd Antartic Expedition II Imperf. 3c. Scott. 768a


US 1935 National Stamp Exhibition ; Byrd Antartic Expedition II Imperf. 3c. Scott. 768a


Series: National Stamp Exhibition Issue

Stamp details: Byrd Antartic Expedition - World Map on van der Grinten Projection

Issued date: 15-03-1935 (dd/mm/yyyy)
Face value: 3c.

Emission: Commemorative
Watermark: No Watermark

Catalogue No:-
Scott (USA): 768a

Printer: Bureau of Engraving and Printing

Stamp Colors: Dark blue
Perforation: Imperforate

Themes: Map, Globe, Explorers

Total print: 267,200 Souvenir sheets (estimate)

Note: The Farley Special Printing.

A margin of at least 18mm (gutter distance between stamps in printed panes) must be present to distinguish this stamp from the regular printing.

Description:- The van der Grinten projection is a compromise map projection, which means that it is neither equal-area nor conformal. Unlike perspective projections, the van der Grinten projection is an arbitrary geometric construction on the plane. Van der Grinten projects the entire Earth into a circle. It largely preserves the familiar shapes of the Mercator projection while modestly reducing Mercator's distortion. Polar regions are subject to extreme distortion. Lines of longitude converge to points at the poles.

Source: en.wikipedia.org/wiki/Van_der_Grinten_projection