Authenic WW2 Japanese Aircraft spotter chart depicting American aircraft

By kevintreez, 5 January, 2011
Description

An aircraft identification chart of American Naval Aircraft in Japanese writing and the red official stamp of the Royal Japanese military in the top right hand corner.  I have found this chart NOWHERE else on line or in the museums.  Two major auction houses in NYC were unable to appraise it a few years back due to having no comparison.  Pictures to follow if anyone can help.

Category
Militaria
Medium
Rice Paper with ink.
Distinguishing marks
Royal Japanese Military stamp in upper right corner
Condition
Good
Size and dimensions of this item
30" x 30"
Date Period
WW2
History
My grandfather was involved with the invasion of Japan in WW2 and a field commissioned captain. The chart was found in his scrap book after almost 50 years.
eBay Auction Link
Price Paid (If known)
Grandfather brought it back from WW2. He was involved with the invasion of mainland Japan
For Sale?
Yes