Mitsubishi J2M "Raiden" (Jack) #6 301Ku J2M2

One of the J2M2 prototype photos most often featured in various publications is one of an early model without the oil cooler intake under the cowling and unfortunately with the tail number censored.
Everybody suspected that the tail number was "ヨC-104" (YOC-104) but it was only a couple of years ago that aviation researcher and restorer Nakamura-san (aka Ａ６Ｍ２３２) first introduced an uncensored version of the photo on his site HERE.
The aircraft belonged to the 301ku and the location was Yokosuka base in Kanagawa prefecture.
Artwork by Devlin Chouinard.