#5-1/2F envelopes are a special class of small envelopes with a variet...
#5-1/2F envelopes are a special class of small envelopes with a variety of applications. Most coin envelopes cannot be mailed or used in automatic processes. #5-1/2F coin envelopes measure 3-1/8" x 5-1/2" and come in a variety of paper material, colors and weights.
Some uses of coin envelopes include: