@SFOMuseum Instagram Posts This is SFO Museum's archive of the @SFOMuseum Instagram account. from February 24, 2017 There are 4 posts .

A mechanical device patented by Harry Hoke, Jr., required the player to flip a steel ball into a snake’s mouth before the machine would pay out—a feature billed as “Compulsory Skill Control” on the body of the machine. This image was posted on February 24, 2017.

A mechanical device patented by Harry Hoke, Jr., required the player to flip a steel ball into a snake’s mouth before the machine would pay out—a feature billed as “Compulsory Skill Control” on the body of the machine. This image was posted on February 24, 2017.

This Airmail flight cover promoting the 1939 Golden Gate International Exposition honoring National Air Mail Week was postmarked on May 15, 1938. This image was posted on February 24, 2017.

This Airmail flight cover promoting the 1939 Golden Gate International Exposition honoring National Air Mail Week was postmarked on May 15, 1938. This image was posted on February 24, 2017.