A History of Thai Banknotes: 4th Series Part 2



In the beginning, Japan was supportive of Thailand's request for assistance in printing banknotes. At the same time, Thailand was unable to rely on Japan's banknote production due to the worsening war situation, so it created its own banknotes despite its lack of experience. The Royal Thai Survey Department was tasked by the government with printing banknotes on paper made in the province of Kanchanaburi by a Thai paper mill. Paper created from Japanese sugarcane pulp was initially provided by Japan; it was white and robust. When it ran out, it was necessary to use locally available raw materials, including rice straw pulp or bamboo pulp, which were less white and had a duller colour than in the beginning

Malaya also printed banknote from its Royal Survey Department in 1940.






The Series 4 banknotes that the Royal Survey Department printed came in 4 denominations, 1 baht, 10 baht, 20 baht, and 100 baht. 100 baht notes would feature a stamp of the B.O.T logo on the back as it was used for higher transactions.
I personally like the design of the 1 baht note the most, the dark colours and contrast give it a nice touch, unlike the dull-looking 10 baht note. 20's ok, probably the most high quality ones out of this series type. I would love to have the 100 baht note in my collection someday, as very few of these were produced, compared to the Series 6 varieties, which are slightly different. I would recommend this to collectors, who like notes with historical significance, even though the security features aren't that great, they're better than the ones of Series 7, but this may not be for collectors who value beauty more.
Here are some rare signatures to look out for. 1 baht: Leng Srisomwong (Prefix C33) Kuang Aphaiwong (C29 - 32). 10 baht: N51 (two signature types) Wichit Lulithanon (N83 - 86), 20 baht: P83 - 84 (three signature types), Leng Srisomwong (P85 - 88), 100 baht: Leng Srisomwong (S5- 6).
My ranking for this series is 6.3/10. Out of all the series and major varieties, this one stands at 18th place.