This is a lot of 12 vintage Popular Mechanics magazines.  They are all on good to very good condition and have the mailing label in-tact.
March 1980 - Commuter Mopeds, North Sea, Vacuum Guage, Gardening, more...stains on front cover 
October 1980 - Stoves and Heaters, Mazda RX-7, Atomic Clocks, All 1981 Detroit Cars, more...stains on front cover
November 1980 - Guide To Small Batteries, Corvette Owners, Stereo Headphones, more...some damage to very edge of front cover
December 1980 - V8's, Woodworking Clamps, Solar Greenhouse, Dashboard Navigation, Oil Rig Disaster, more
February 1983 - Undersea Hide and Seek, Laminate Countertops, Washstands, Nissan Sentra, more
March 1983 - '83 Corvette, Weather Vanes, Wood-Shop Tips, Weather Forecast Station, Repairing Speakers, more
April 1983 - Hummers, Camaros, In-A-Wall Workshop, Window Treatments, Fixing Faucets, more
May 1983 - Make Your Car Last Forever, Satellite Rescue, '57 Thunderbird, more
June 1983 - Jump Jets, AMC Renault Alliance, Masonry Repair, Best Portable Computers, more
July 1983 - Testing New 4x4's, Woodworking ideas, Building Sports Planes, Brainy Watches, more
August 1983 - Amazing Paraplane, Sexy New Convertibles, Picnic Tables to Build, Lightning Rods, more
September 1983 - Daring Air Teams, Ford T-Bird, Stacking Stereo Cabinet, First Look At New 1984 Cars, more

All but two have the cigarette ads on the back cover: Camel Lights, Carlton, Kool, NOW, Camel, Barclay, Winston, Belair, and Viceroy Rich Lights.  Two have a Toyota ads.