A banknote issued by the Việt Minh for circulation in the Democratic Republic of Viet-Nam (North-Vietnam). 
<p>P-31a D-18a 500 Dong 1949 
</p>
No watermark.
The Việt Minh.
<a rel="nofollow" class="external text" href="http://art-hanoi.com/collection/vnpaper/ho500d.html">North Vietnam 500 Dong 1949</a> (Art-Hanoi).