The german company JAMARA distributes Radio Controlled Toys and other toys for little children. Now, Oct.2020 they offer in their news catalog on page 17 also little plastic animals. I think this animals are the same as you find in many other plastic bags. Unfortunately the fotos are not good enough to recognize the animals completly. JAMARA sells the animals in two different sizes.
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Here you find more Information:
Jamara Farm Animals 2,5".
Jamara Farm Animals 3,5".
Jamara Wild Animals 2,5".
Jamara Wild Animals 3,5".
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On ebay you can find an older FarmSet with an tractor from NEW HOLLAND.