Context for others: Standalone computer monitors per se did not exist at retail in 1977. The only choices were either televisions, or displays for security-camera systems such as the Sanyo VM-4209 <https://collections.vam.ac.uk/item/O1461694/sanyo-vm-4209/>. The latter, because of its high quality and perfect size for stacking on top of the Apple next to disk drives <https://www.reddit.com/r/VintageApple/comments/3snpqd/i_foun...>, became the iconic Apple II monitor of the early years until purpose-built computer monitors from Amdek and others, as well as Apple's own Monitor III <https://en.wikipedia.org/wiki/Apple_Monitor_III>, became widely available.