Antique Japanese etched Fuji Mountain with movable Sparrow bird hair stick GS603

Japanese hand-made metal hairpin. Featuring an etched Fuji mountain at the end, two movable parts on the side, they are fruits and a Sparrow bird, which can rotate in a circle.
The head-pin is 6 5/8{ x 1/2", 10.3 grams. Circa approx. 1930-1940, in very good condition. Need cleaning.