Takara released a new collectible line known as "Small Toys Store", which contained miniature sized of the toys produced by Takara during the 60's to 80's, among the lineup is replica of Optimus Prime, a tribute to Transformers. The replica comes with both non-transformable Optimus Prime in robot mode and vehicle mode in the classic package with the "down-sized" classic catalog, both are even smaller than the Extremely Small Transformers line.
Source & more photos here:
http://www.fantofan.jp/