These are Vietnam Era USGI Adventure Line 20 round magazines.  As the photos show, there is basic wear & tear on the finish, but the things that matter are in great condition.  These are the early contract magazines with the metal followers, these are very desired because they already reliable and dont require a follower upgrade, they run like a dream.
 
By purchasing this, you will receive 3x of these magazines in roughly the same condition as the magazines shown in the photos.
 
If you have any questions about these mags, dont hesitate to reach out.