One of the Gunpla work featured is RX-78 x IRF-10 Gundam, done by Takanori Nishikawa shown in the image above.
The models will be on display till September 5th inside the official shop of Shizuoka Hobby Fair.
These models may be the ones on display at Gundam Super Expo 2010 earlier this month.
Shizuoka Hobby Fair, or the former name "the Capital of the World of Model - Shizuoka Hobby Fair" is an event that was launched on the same day as the debut of RG 1/1 scale Gundam statue in Shizuoka (July 24th). The entire event will be ongoing till March 27th, 2011.
Images and information are from Gundam Dot Info.