For anyone interested in Japanese banknotes, here is the most common modern circulating note with rough translations, the 1000 Yen (worth approximately $9.14 US). It has incredible anti-counterfeit devices all over it, some of which can't be shown through regular photography. I show the most obvious visible ones here. 日本銀行券 (Nipponginkōken) - Bank of Japan banknote 千円 (sen'en) - 1000 Yen 日本銀行 (Nipponginkō) - Bank of Japan 野口英世 Noguchi Hideyo - rather than a politician, the note features a bacteriologist 国立印刷局製造 (Kokuritsu insatsu-kyoku seizō) - Manufactured by the National Bureau of Printing - this is very tiny printing on front bottom center The watermark is gorgeous and extremely detailed. Tilting one section one way reveals a "千円." Tilting it another way reveals "1000." The side of the note contains a single translucent line. Other denominations show 2 or 3 lines. The bill also has raised ink so the visually impaired can differentiate between denominations. On the 1000 Yen the small black lines on bottom left and right have texture. The stylized seal in the middle also glows a certain way under UV light and the note contains numerous microscopic and hidden characters. As such, counterfeit Japanese notes make up a tiny fraction of currency in circulation. The note does not display a year. Others may know more about this, but the years apparently differ by the color of the serial numbers. I think this one is blue or 2019, but correct me if I'm wrong.
I believe the paper alone is worthwhile a mention - if I recall correctly it is a blend of hemp unlike most other world banknotes which are often printed on cotton / linen blend.
Must be a recent note. When I was in Japan in 1965 1000 Yen was not worth approximately $9.14 US. It would have been worth approximately $2.78 US.
Yes, the paper is special, but I don't know a lot about its composition. It looks like it's made from "mitsumata" also called "Edgeworthia papyrifera" or "Oriental paperbush" and "abaca pulp." People apparently also use this for making washi paper. The bill has a stiff and durable papery, fibery feel in hand and does not have any of the plastic feel of polymer. Yes, I believe the note pictured is extremely recent, possibly even from 2019. As said above, it doesn't display an explicit date and I think the color of the serial number determines the year. From further research since I posted above, this one looks like a "Series-E," which began circulating in 2004. Given that, it also looks like the serial numbers on Series-E 1000 Yen notes changed from black to brown in 2011 and then to navy blue in March, 2019. I think the note I have has a navy blue serial, but I'd have to compare it to one with a black serial number to be sure. As for the value of $9.14 US, that comes directly from foreign exchange calculations on the Internet. I'm sure that in 1965 the value was much less since the Yen has, from what I can tell, generally increased in value against the dollar throughout the last 50 years. According to an online exchange calculator, as of this moment, 1 Yen equals $0.0091 US.