What's Your Score

"Shackman N.Y.1 No. 3627 Cross Puzzle", made in Japan, circa 1960's?
(cardboard box 5+1/8" x 1.75" x 5/8", direction sheet, and six 1/8" thick wood pieces
consisting of four identical Z shapes and two identical L shapes;
assembled cross is 4+3/8" high by 3 inches wide at the cross, and 1" wide at the tips.)