The pattern specifies 6oz vintage 3ply crepe wool, which may well be closer to modern 4ply in texture. Pattern date: 1940s (appears in 1941 edition of the book).

The beading requires about 1,400 beads.

Length from shoulder to lower edge, 14.5”.
Width all round at under-arm, 32” (to fit 34-36” bust)
Sleeve seam, 4 ins.

Sleeve pads are recommended.