Four sets of airmail-style envelopes. - Quantity: 4 sets - Design: Airmail style - Colors: White/Blue/Orange/Green - Features: "VIA AIR MAIL" and "PERFECT" printed on the envelopes Each set contains 10 envelopes, but one bag of Western-style No. 6 envelopes has 8, one bag of Western-style No. 4 envelopes has 8 and 7, respectively, and there are 2-3 used envelopes of sizes other than Western-style No. 2. These are one-touch perfect envelopes, allowing for semi-permanent preservation and perfect gluing. Please understand that these are vintage items stored at home, and consider this before purchasing. Thank you for looking.