Stamping the stamps over: NDH stamps over pre-war Yugoslavia
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/11932978@N00">tomislav medak</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/tomislavmedak/3803211573/">Stamping the stamps over: NDH stamps over pre-war Yugoslavia</a>