Glassine semi-transparent envelopes, used by the U.S. Post Office for stamps purchased at the P.O. counters, are the ideal storage solution for stamp collectors. Glassines are also recommended for the storage of negatives and plates from electron microscopes, and temporary storage of seeds and etymology specimens.
Scott Numbers and identifying information can be written on these envelopes, but we recommend that writing should be done before stamps are placed in the envelope, to prevent the impression of the writing onto the stamps inside.
The Size #4 glassine is ideal for storage of Plate Number Blocks and Larger glassine envelopes can be used to hold your covers collection

Many collectors use sturdy storage boxes that hold their glassines in place. We offer three sizes of Red Boxes that are ideal for storage of stamps in glassines.

• made from semi-transparent #30 glassine
• pH neutral archival quality
• open on long edge, with ungummed flap
• strong seams, using anti-tarnish adhesive
• envelopes feature seams on two side.
  (Size #1 envelopes have a side and a bottom seam)
• labels adhere to glassine, or print direct to the envelope.

Envelopes are machine counted. Dividers are placed by machine in increments of 100, which are used for our packaging of 100s. We do not physically count the envelopes before shipping.

NOTE: Please review the pictures as the flaps may be flat or triangular depending on manufacturer.