From the last entry in the thread viewtopic.php?f=8&t=9810 ; quoting Jack:
Post Re: 6,5x54R Dutch Mannlicher with hs A55
"After my post yesterday I went through my notes and came up with these examples of Royal Netherlands Indies Army (KNIL) headstamps for the 6.5 m/m cartridge. I put them in chronological order. For each two-element stamp the order is 12 and 6 o’clock; for the four-element stamps 12, 3, 6, and 9. In all examples the marks at 12 and 6 are original to the cartridge case. For those having 3 and 9 o’clock entries the markings are post-manufacture and probably hand-work. The 12 and 6 marks are oriented vertically; those at 3 and 9 are to be read horizontally. Listing is chronological by original manufacture date:
22----1A----FN----38
22----2-----FN----38
22----3-----FN----38
23E------AI
28D [also:E,F,G,H,I]----2B [also:3,4B,5,5A,5D]----AI----39
29------B
29------D
29------D60
39A-----AI
39C-----AI
39D-----AI
None fit the pattern established for the Netherlands army in this period, and those for 1923, 1928, and 1939 have letters combined with the abbreviated date. Those shown for 1929 seem to follow the Netherlands home pattern but lack entries at 3 and 9 and are unlike the other examples in lacking any identifiable original maker’s initials. The cartridges with the FN mark were loaded with bullets basemarked “22 FN”; the bullets in the 23E cartridges had an “A” on the base. Jack"