200 CHF banknote

Back of the Swiss 200-franc banknote, ninth series (issued in 2018).

The 200 CHF banknote was issued by the Swiss National Bank 22 August 2018.

The obverse illustrates the right-hand rule, while the reverse shows signals from a particle collision in a detector at the CERN Large Hadron Collider in Geneva—a perfect banknote for physicists ;-)

For more information, see Wikipedia.