I've become a member of Dai Nippon, the philatelic organization that deals with the Dutch Indies during the Japanese Occupation (website is mentioned on the left). The great thing is that they hold quite a lot of auctions, so I've finally been able to expand my collection of overprinted stamps from that area and era.
So far, most of my collection consisted of the (I suppose) more common overprints such as the Borneo anchor or Riau cross.
I was therefore very happy to win this stamp here and bring some variety in my collection.
It has a so-called hinomaru (red flag) overprint, which was used in Tapanuli (Sumatra). There are two types, a thick and a fine overprint, this example having the latter.
Nice, isn't it?!