In the years leading up to World War 2 the Netherlands East Indies started also making preparations. On of these was extending the amount of men that could be called to arms in the form of a reserve. The largest base for this were former (indigenous) men of the KNIL that had been honorably discharged.
To increase the visibility of the reserve a badge was introduced in November 1939. The badge was worn on the civilian clothing. A version of this badge is shown above. In 1941 the total reserve of former KNIL men amounted to 4700.
How many badges were actually made and handed out remains unclear but looking at the potential number of 4700 and only two years of use of the badge (1940/41) and the fact that the majority of these indigenous reservists became POW’s in 1942/1945 and most of these remained in Indonesia after WW2 it can be considered a rare badge now.
Other versions of reserve badge for the Royal Legions (Surakarta/Jogjakarta/Madura) also exist and can be considered even rarer! So far I have found no pictures of the badges being worn.