You are purchasing the pair unless you let me know otherwise:

Vintage Electrolet Killark 1/2 F D device boxes with Covers -2.

These were used to house the exterior key switch for vintage 1953 electric garage door openers. Only one original switch remains.

In recent years, I have not chipped the paint off the screws in order to access the insides.

Boxes are sound as the pics show. Should be a fun restoration project for someone.