Also known as Kobe Yoko Ltd. was a major Japanese toy maker from the post war period (1950 - 1970).
Yoshiya -known by their mark KO- specialised in mostly mechanical or wind-up toys featuring fanciful designs, but they are also known for its extensive line of Robby the Robot knockoff toys.
What's your 'Yoshiya' worth? Here are some recently sold items (USA):
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