1. 450 USD for a 50 rupee note featuring the word 'sex' through a palm tree design
The 50 rupee note from the Seychelles, a country in East Africa, features the word 'sex' printed prominently on the banknote. While it isn't technically a printing error, it is hard to believe that a nation's currency would feature such a controversial word. Despite the surprise, many collectors are drawn to this unique design. This misprinted note is now worth 120 times its original value. At an auction in Dorset, UK, a buyer paid 450 USD (around 10 million VND today) for this note, even though its face value was under 4 USD. The note was issued between 1968 and 1973.

2. 5 Million VND for a Misprinted 500,000 VND Note
The 500,000 VND note in question measures an impressive 25 x 55 cm (compared to the standard size of 6.5 x 15.2 cm) and is printed on cotton paper. It was produced by the National Mint to commemorate the 25th anniversary of its founding. The owner of this note is Mr. Bui Nguyen Gia Khang, the director of a tech company in Ho Chi Minh City. Due to its extremely limited print run, the note holds significant value for collectors of rare currency. This misprinted note is valued at 5 million VND, ten times its original worth.

3. 23 Million Yuan for a Misprinted 100 Yuan Note
According to Shanghaiist, a misprinted 100 yuan note with an inverted watermark of Chairman Mao Zedong's portrait is an extremely rare occurrence. The odds of such a printing error are about one in a million. The note was previously owned by a businessman in Wuhu, China, who received it in exchange from a customer. As of now, the exchange rate between the Chinese Yuan (CNY) and Vietnamese Dong (VND) is 1 CNY = 3,253.37 VND. Therefore, the 23 million yuan value of this note is equivalent to more than 74.8 billion VND.

4. 1.5 Million Yuan for a Misprinted 100 Yuan Note
A mechanic from Chongqing, China, unexpectedly became a millionaire after discovering a misprinted 100 yuan note featuring a subtle error in Chairman Mao Zedong's portrait. While the error isn't the inverted watermark, it involves a small but noticeable line printed on Mao's chin, which makes this note highly valuable. Though it may appear like an ordinary note at first glance, a closer inspection reveals the mistake. This rare misprinted note is valued at 1.5 million yuan (equivalent to over 4.8 billion VND today) due to its uniqueness and rarity.

5. 8,000 British Pounds for a Misprinted 1 Pound Note
The 1 pound note became famous due to Arabic inscriptions printed over it. These notes were used by the British Army in Turkey during World War I in 1915. Despite appearing simple, this misprinted note is valued at 8,000 British pounds (equivalent to more than 222 million VND today).

