<p>The Otsu-1 was a license built Salmson 2A.2 reconnaissance biplane built by Kawasaki for the Imperial Japanese Army. The Salmson 2 was a successful French WW1 reconnaissance biplane of which some 3,200 were built.
Sadly, this is the only surviving remains of any Salmson 2 or Otsu-1.
Kakamigahara Aerospace Science Museum
Kakamigahara City, 
Gifu Prefecture, Japan
</p>
15th March 2019
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/65001151@N03">Alan Wilson</a> from Peterborough, Cambs, UK
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/ajw1970/48128367447/">Remains of Kawasaki Army Otsu-1 [ID unknown]</a>