• Ultraviolet Photography

US$20 in SWIR 1500-1600nm

Infrared SWIR
3 replies to this topic

#1 Andy Perrin


  • Members+G
  • 3,146 posts
  • Location: United States

Posted 19 July 2019 - 02:58

(The black is electrical tape to hold the bill flat.)

Front, Visible:
Attached Image: front vis UVP.jpg

Front, SWIR 1500-1600nm:
Attached Image: Twenty dolllar bill SWIR front_res UVP.jpg

Rear, Visible:
Attached Image: rear vis UVP.jpg

Rear, SWIR 1500-1600nm:
Attached Image: Twenty dolllar bill SWIR rear_res UVP.jpg

#2 dabateman

    Da Bateman

  • Members+G
  • 1,903 posts
  • Location: Maryland

Posted 19 July 2019 - 04:46

I washoping you found a filter for $20.
You can see most of the security features. In UV it would high light the others.

There are also suttle difference between series. Here you have the 2013 one.

Rare notes have a star at the end of the serial number, instead of a letter. That is when a mistake was made and it was pulled.

#3 Andrea B.

    Desert Dancer

  • Owner-Administrator
  • 7,957 posts
  • Location: USA

Posted 23 July 2019 - 18:05

That light banding on the left in the SWIR of the back of the $20 is weird.
Andrea G. Blum
Often found hanging out with flowers & bees.

#4 Mark Jones

    Ultra Violet Anti Villain

  • Members
  • 93 posts
  • Location: charlotte, nc

Posted 25 July 2019 - 11:46

thanks for posting this, it will allow me to make my counterfeit bills more accurate in the infrared spectrum, lol!
Peace, Mark Jones, Charlotte, NC, UV amateur photographer.