Glassine envelopes are the most popular way to package and store your extra stamps. These semi-transparent glassine envelopes come in a variety of sizes and are produced to exact industry tolerances. Strong seams, ungummed flaps all of which open along the longest dimension. High quality Westvaco brand.  Note: all envelopes are top opening as shown above.

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Black Backing Slips for Glassine Envelopes are used by collectors and dealers for over 50 years, these high quality slips are solid black with a white margin at the top for description and pricing. An attractive perforation border adds to the design.