Yoshiya (1950 - 1970) also known as Kobe Yoko Ltd. was a major Japanese toy maker from the post war period.

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.

KO toys

Ko value and price guide

What's your 'Ko' worth? Here are some recently sold items (USA):

Item Title Date sold Price
Rare1950 Yoshiya Japan Alli And The Apr 2019 $ 1 750,00
Yoshiya Mighty Robot Scare Tin Toy Robot May 2019 $ 1 200,00
Japan Tin Pi From Rare Space Toy Mar 2019 $ 464,00
Horikawa Sh Masudaya Yoshiya Machine Apr 2019 $ 394,77
Japan Chief Robot Space Tin Toy Robotman Apr 2019 $ 425,00

Take a look at all sold Ko items on eBay for a value indication. If you're not sure what you have, you can post your question below.


Do you want to dive into the fascinating world of collectibles, and want to learn about value and identification? Discover more with these price guides on Amazon.

Ko forum (2 comments)

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Brian - March 8, 2019

I have a Singing Warbler in the original box. Warbler is in great shape, box is torn in one corner. Does anyone know what year this was made and the value

Val - August 24, 2010

I have a tin toy with KO made in japan it is a whale with pioneer on the side bubble eyes and painted like space america theme it has a pull up lever that allows whale to move after it is wound up the mouth opens up and down and it used to have sparks inside which have since wore out just wondering if any one could tell me about it i think it is about 1960 as i played with it when i was little just curious about it.