How cute!
 An Japanese, low grade silver charm; modelled as a tortoise/turtle, it's shell hinging open to reveal a tiny glazed compass!
Such a unique charm, very collectable and wearable.
Compass is working.
 
Japanese circa 1900- 1950
Marked SPECIAL 
I am basing my date on one that Nalfies had in the past as theirs is nearly identical but there are some other quite similar ones that are dated as 1950
Measures - 30mm x 18mm (not including ring)
weighs - 3.34g
Excellent condition