This tunic is plain woven linen embroidered in double running stitch in black and red silk, made in Egypt. Unfortunately there are no dimensions available. There is no round section visible for the neck itself, the textile seems neatly cut across the top. I am unsure of how the decorations would go around the neck, since it is a square design. It is currently in the Cooper Hewitt, Accession Number 1971-50-13
I have charted it up for use.