Font: P1-v1

"p1" could stand for (the first font slot in a printer’s ROM or RAM bank), and "v1" simply "Version 1" of its internal data structure. In some legacy UNIX printing systems (like those using lpr or CUPS in early forms), when a font file was not found, the system would mount a bare-bones, monospaced fallback and label it p1-v1 as an internal flag for developers.

For those interested in using the P1-V1 font, it is available for download from various font libraries and websites, including: p1-v1 font