NEC Character Display, Model JB-1201M(A). One of the early monitors, this is dated April 1981. 12" green monochrome, dimensions are approx 14 x 12 x 11.5 inches. Ports include video and audio in and out.
It works great and is evenly colored - even the bottom. There is a speaker crackle when first turned on. Please note that I haven't tested anything beyond the video in port and adjusted the knobs for contrast and brightness.
Monitor cable included.