It could be that Japanese toy manufacturer Hadsons and TKK are one and the same. If someone knows more about Hadson or TKK toys, please let me know.
What's your 'Hadson' worth? Here are some recently sold items (Australia).
See all sold items for more prices.
Do you want to know more about collectible tin toys, and want to learn about value and identification? Take a look at these books on old toys on Amazon.