NFL PLAYBOOK (1973 NFL Properties) 3-ring binder with various informantion

NFL PLAYBOOK (some sort of American Express promo/gift item?)

Not too sure what this is?

9.5 x 11.25" binder with five sections - RULES, STRATEGY, SPECIAL TEAMS, DEFENSE, OFFENSE - about 70 pages

binder worn along spine/edges

Code JSB93