Zenith 20" S3 monitor
 

Picked up for $10 at Habitrail for Humanity, what a find. January 1988 birthday. Assembled in Mexico. Has a real good CRT!:yes:

It says "color sentry" and has thumbwheels cor BL-P-C-T on side at bottom.
Also two feed-thru type AV inputs with a slider switch to select.

Looks great and I will post pics.