Thanks! It turned out that it is indeed the HD model.
By the way, actual screen dimensions are 758x1024 pixels
768x1024, as stated on several websites, and which is normal for XGA monitors on PC).
I composed two test patterns to check the screen resolution.
These test patterns contain a grid of alternating lines to prove that the bitmap pixels are actually mapped 1-to-1 to screen pixels, while the circles in the corners can be used to check the width and height of the display.