The Mini-Three was a concept trike built for children from 5 to 10 years of age. It was built to better suit their size than what was available on the market. As far as the research has lead, there is one original that was made and one reproduction.

American Vehicle Corporation approached D&D to start manufacturing the Mini-Three. However, the deal did not come to fruition. 

More information can be found at www.oldminibikes.com