This is a USED factory Sig P228 9mm 13-round magazine.
Sig Sauer’s P228 is the gold standard of combat pistols, trusted by dozens of military and law enforcement agencies from all over the world—including the U.S. Navy Seals. These used magazines offer a huge savings over factory new mags.
Available in three conditions:

Good – Expect mild to heavy finish wear, scratches and dings, grease and grime.
Fair – Expect little to no finish remaining, minor pitting and rust, scratches and dings, grease and grime.
Poor – Expect little to no finish remaining, heavy pitting and rust, scratches and dings, grease and grime.

The fair and poor condition magazines are sold AS-IS. No returns on these two conditions.