Return postage envelope construction - is made of several folded sections for both outward and return posting

摘要

The envelope is divided into three sections folded along the perforated lines. The envelope is able to contain loose documents on the outward despatch. One end of the envelope may be used for the return postage. This portion is divided into three sections (D, E, F) for folding. The envelope is supplied in the appropriate places with pre-gummed surfaces and perforations to allow the dividing of the envelope.