Roll of 100 brand new forever stamps by USPS. Stamp design will be one of two US Flag versions on white background issued in 2017 or 2018 (see images). Always equal in value to the current First-Class Mail 1 ounce rate. Self-adhesive for convenient use. Check to make sure you have genuine stamps, and not counterfeits. Mail sent with counterfeit stamps can be confiscated. Genuine stamps will have microprinted letters USPS on every stamp. On the 2017 variety these letters are typically found on the right edge of the flag, visible with a magnifying glass (such as one of the images above). Genuine stamps have plate numbers such as "P1111" that appear 3 or 4 times along the bottom roll (usually every 25 stamps or so), as in the first product image. With a shortwave UV light, genuine stamps will shine with a green phosphorescent glow, while counterfeit stamps just shine bright white. Under a magnifying glass the counterfeit stamps will exhibit lower print quality, with noticeable dots and lines, while the genuine stamps appear smooth.