#1 Coin Envelopes (2 1/4 x 3 1/2) in Champagne Metallic are perfect for holding small items and collectables. This multifunctional envelope is designed like a standard-sized envelope, but a miniature version. With a secure, moistenable flap, this is the ideal envelope if you're looking to store your coin collection, stamp collection, organize manufacturing parts or any small inventory items. Constructed from 80lb. cover, Champagne Metallic is the lightest, golden hue we offer, much like the drink it's named after. A modern way to convey quality and add personality, with sparkle and shimmer that stands out. Please note that this envelope size is not mailable via USPS.