Rare stamp found

Just like in the Netherlands, the Dutch East Indies also had long bar cancellations. However, in a different design, namely with hatched segments. The cancellations were manufactured by the Royal Mint in Utrecht. The impressions of the cancellations are best showcased on orange-red stamps, and there are plenty of those! Let us first describe a few different types. The first long-bar stamps had hatching that filled the entire segment, up to the horizontal bars and the inner circles. In the first stamps delivered, the outer circles were complete, without interruptions. Later, the outer edge was interrupted, creating a sort of chisel-like shape. Three crosses were placed in the bottom circle. The larger offices had stamps containing a serial number, placed between the vertical bars in the lower segment. In the lower circle, the crosses on the stamps for branch offices in larger towns were replaced by an indication such as CENTRUM or the street name, such as MOLENVLIET. In a subsequent type of stamp, the hatched area has vertical bars that do not extend to the horizontal bars and the inner circle. Differences can also be seen in the size of the date digits. Sometimes the letter V is seen with the hour indication, with or without a line underneath, or the letter N for morning and afternoon. The postal service of the Dutch East Indies introduced a new type of stamp in January 1935: the so-called dot-surface filling stamp. However, this type of stamp was used by only a small number of offices, while the long-bar stamp remained in use simultaneously. The stamp looked very different. The vertical bars were replaced by dots and the three crosses at the bottom by a thick curved bar. Impressions of some of these stamps are seen more frequently, but a few stamps are rare to very rare. It was therefore a great surprise when I came across a stamp in a stockbook bearing the impression of the small office of BATOEROESA. The town is situated in a mountainous area in South Sumatra. Among collectors, the stamp was known to be present in a collection, as someone had described it. But an impression was unknown until now! The South-West Pacific Study Group was therefore quite happy to include the image of the impression on their website. See www.studiegroep-zwp.nl and click on the domain langebalkstempels. You will then see the stamp with the stamp depicted under the office name Batoeroesa. The value of the impression is several hundred euros. Perhaps you also possess a rare impression of an Indies postmark? You can check this on the Study Group's website. Will you be lucky?