Dr. Ir. (Achmed) Soekarno, peasant

serial # printed

serial # typed
There are some known exceptions to the below explained coding rule. This concerns a number of notes that were provided with a serial # using a typewriter under primitive circumstances (e.g. "036137 SQ").

● 6 digit serial # with 2 capital Block letters
● the first digit of the serial # is always "0"

● The 1st Block letter
This note was issued with 10 different number ranges (one of 9.999 and nine of 10.000), - each range havinig its own specific and unique letter.
Therefore, 10 different letters were needed. The origin of these 10 letters is the Indonesian words “DUA RATUS LIMA PULUH" (250). When the double letters are eliminated, it leaves 10 letters: "DUARTSLIMP".
For the serial # ranges and the first Block letter the following "Huisman Table" for fixed relation between serial # and Block letters is applicable:

● The 2nd Block letter
The 2nd Block letter exists in fixed combinations with the 1st letter. The following "Huisman Table" is applicable:

● The number range of this note is "060000-069999". So the only possible 1st Block letter is "L"
● with 1st Block letter "L" the 2nd Block letter can be only an "L", either.  

This note has the number 069463 LL

Conclusion: It could be genuine.