Special Features:

Mono-outlook window w/o range border, lithographed inside w/solid black and checkered tint blocks, seams to be gummed w/u.S. Envelope co. Humid resin back seamgum /thurs/, flap to be gummed w/u.S. Envelope co. Formulano. 5264 visit-grip gum

Properties:

An envelope, usually made of a paper product. The face may be plain or preprinted with or without an open or glassine address window. The closure may be a gummed flap or a button and string fastener. When required a smaller envelope may be glued on the right face of the larger envelope. The interior may have a printed opaquing design and/or contain chipboard insert(s). It is designed for mailing correspondence/letters; records, or exposed and developed radiographic film. Excludes envelope, photographic negative; envelope, radiographic film mount, dental; and envelope, transparent.