Is this Chromaclear

[Eric H]

I would say no, it's a Shadow Mask type tube, each color is surrounded by a black area, i.e. "Black Matrix Tube"

The Cromaclear apparently has no black area between the colors in the vertical axis, similar to the Trinitron except the Trinitron has masking only in the vertical axis.

Cromaclear seems to have been an attempt to build a better tube without violating Sony's Patent on the Aperture Grille system.