The Pendant Puzzle
This is a burr puzzle nicely made in silver with a chain through each of the six pieces. The necklace can be worn with the puzzle together or with the six pieces hanging separately as in the picture on the cylindrical box. Made in Denmark in the late 1960's or early 1970's.
The Chinese Puzzle
This is not Chinese made, nor do burrs originate in China. It is called Chinese as many were, as a marketing gimmick to make it seem exotic. The six wooden pieces do not fit together particularly well, but it is an unusual early burr puzzle and the box is in very good condition, though someone made lines in blue pen on one of the pieces.
The Yamato Puzzle
This puzzle actually is Japanese produced and comes with a detailed and extensive solution sheet. The puzzle is almost a miniature, the box measures only about 2½ inches square.
Unusual 12-piece Burr
This burr is more recent than the others, but is quite interesting in that it has 12 pieces rather than the typical six. I have seen other burrs up to 18 pieces or more, but never another arranged quite like this. The scan shows it from two different angles.