RARE Vintage 1976 Sanrio Hello Kitty LITTLE TWIN STARS Mini Sketch Book w/ Case

Plastic case cover snaps and holds a Little Twin Stars mini sketch book.  Only 2 pages out of the entire sketch book have been used (it appears to be drawings of Big Ben Tower).  The rest of the book is unused and in great condition - especially considering it is nearly 40 years old!  Aside from the 2 pages, the book feels and looks new and unused.

Plastic case measures approximately 5" x 4 1/8"

Sketch book measures approximately 4 3/8" x 3 3/8"