Kirk Photo PZ-130 universal camera plate for the Nikon 1 V3 available here The PZ-130 measures L38xW28,7xH9/11mm (L1.5xW1.13xH0.35/0.43") It fits the V3 fine, both with and without the Nikon GR-N1010 grip.
All photos are Copyrighted by Ole Thorsen, and may only be used in any form upon my written permission