The Aeroplane Block Puzzle

"Patent number 35588, Made In Japan", circa 1920's?
(10 wood pieces in a 3.75" x 2.4" x 1/2" cardboard box)

Easy to see how it goes together, but a bit of a dexerity puzzle to put the final piece in; two of the rectangle pieces have bevels to make that work (on on the inside middle and one on both edges).