SF3D Mercenary Forces Reference Card Binder

What do you do with all those data cards that come in most Maschinen Krieger kits? Put 'em in a binder. Designed to hold those roughly A5-sized data cards, this particular binder dates from the days when Maschinen Krieger was called SF3D Original (we're guessing early-to-mid '80s). This particular binder comes with some data cards already included, but there's still room left to add your own.