JAM Paper® #5 coin envelopes are perfect for small items such as coins, jewlery and smalll parts. Need a secure place to store your coins or small items? Check out these underrated susperstars. Coin Envelopes are small, feisty, and get the job done. Size really doesn't matter when it comes to these sturdy little envelopes. These envelopes measure 2 7/8 x 5 1/4 inches, are made from 24 lb smooth paper, have an open end opening and gum closure. Quantity: 50/pack. Color: White. Perfect for personal mail, business mailings, greeting cards, announcements, and so much more!. Size: #5 (2 7/8 x 5 1/4 inches). Features a straight flap with gummed closure and smooth paper finish. With Jam Paper's wide variety of speciality envelopes you can be sure to find what you need for your projects no matter how large or small.