Unique bangle from the 1960s

Diameter 6x6.6 cm Inner diameter 5x5.6 cm. Stamped 925S for sterling silver, Hand Made, H. Madsen, Sterling Denmark. Exceptionally well-made bangle in silver with polished malachite. The bangle is 100% made by hand, which the many details reveal. When the bangle is opened, it can be seen that it consists of 2 identical halves and both the lock and bracket are fitted by hand. The bangle has a nice weight, almost 100 grams. It has 3 pieces of malachite on each side. 1 piece is cracked and 1 piece has a minor flaw. Apart from this, the bangle is in super fine condition.