Currency USD Research


I researched American dollars as the next note to look at and research; as you can see from the front of the notes they are all similar with the $1 and $2 notes being very similar because they aren’t as up to date as to rest of the denominations. All of the Dollars feature previous United States presidents as well as imagery faded in the background and also feature different serial numbers as well as holograms and signatures. All of the notes are a green in colour with some differentiations like the 10 and 50 dollar notes.


As mentioned the $1 dollar note is an older denomination of all the Dollars and because of this doesn’t have the faded imagery and more intricate design. The Dollar bill does feature a highly detailed reverse with security features integrated into the design but hidden so that they couldn’t be replicated for fake dollars to have them. American Dollars use a green linen based paper which means that it lasts longer as well as it being harder to rip.




The backs of the higher amount notes feature either historical scenes as well as historical buildings that are important. Borders and different sizes of texts are placed on the notes so that they can be easily read for the people like the clear sans-serif font used on the bottom right hand corner which could be counted/scanned easily.


When researching the dollar bills I found that the $100 bill was the largest of the notes, however it featured this large 100 vertically which I think looks out-of-place and because of this I thought this back to this note wasn’t real as if it was something that someone had created themselves because the vertical text looked so out-of-place and so different compared to the other notes that I looked at.



  1.    Banknote number is always unique. In the latest series of the US dollars the number is more complicated; it goes as AA 00000000 A plus reserve bank letter and digit.
  2. Much of the ornamental decoration on the US dollars is done in negative, both on obverse and reverse. On the obverse it’s also done with intaglio printing.
  3. Thin lines in the numerals also make it more difficult to counterfeit the banknote. Gradient thickness of the lines is also a feature against fraud.
  4. Miniature details are the most important feature about the US dollars. Portraits become more complicated from series to series, and a lot of tiny details are present at the picture on the reverses of the notes. Portraits are done with intaglio printing.
  5. Concentric lines on the banknotes are oval sections on the obverse and on the reverse. The lines go very close there and such positioning makes the copying equipment draw spectacular “rainbow” lines instead
  6. Most of the black drawings on the banknote are made in the technique of intaglio printing. They are raised above the note and can be felt with fingertips. It’s achieved by a high pressure applying a thick layer of paint.
  7. The watermark has first appeared in this series of the US dollars. It repeats the portrait on the obverse of the banknote at, but is twice as small. In the case with $100, the watermark is Benjamin Franklin’s portrait.
  8. This element changes colour from green when looked straight at the banknote, to black, when viewed at an angle.
  9. Signature is not a serious protective feature; rather a detail to show who is responsible for issuing and provisioning the banknotes.
  10. Security thread on the US dollars was introduced in 1993. It’s still of insider type (never shows on a surface) with the 1996-2001 series, and contains text USA 100 on it in straight and upside down position. The thread glows red under UV rays.
  11. Microtext is hidden within the null digits in the lower left corner of the notes. It’s again USA 100 text, it can be seen with a strong magnifying glass only.
  12. “Hair” is a common feature of many currencies – these small coloured pieces appear in random locations all over the note on both sides. It’s also luminescent under UV rays.
  13. Paper texture is quite unique with the US dollars. It’s achieved by adding linen fibres when producing the paper, and it also gives a unique feel to the notes.


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