We are not selling envelopes, but rather the postage to use a Flat Rate Envelope to mail a coin order from our coin store.

Customers of Denny's OP Coins may purchase Priority Mail Flat Rate Envelope shipping with tracking for their order with this listing. We typically do not include USPS tracking with our "free shipping" offer on orders under $50, but if you purchase this $8.00 tracking option, you will receive a USPS tracking number for your order no matter the total amount of your coin order. Please email us if you have any questions.