The lek was a money denomination of common Cardassian currency.(VOY episode & novelization: Caretaker) lek come in two versions an easy to use paper notes or easier to use electronic data kept on specialized nearly un-hackable fobs kept on person instead of wallets or coin purses.
The Cardassian Drokna.is used a legal tender for use outside the Cardassian union and is usually in the for of gold sealed latinum chits that are worth about three slips to a 4th of a bar depending on the content and purity of the latiunum inside the coin. Cardassian coinage is different than most others because a molecular lattice of gold holds the liquid latinum in sealed nanoscopic bubbles rather than the far larger containers made by bricks that can breach and cause the latinum to spill out. Even though they are of superior construction Ferengi only take them at 85% of market value for the same weight as latinum either due to greed or nationalistic jealousy about a race that is better at them at storing the liquid metal.
|Types of currency|
|materials||acta crystal • gold • diamond • latinum • ludugial gold • silver|
|units||bilbok • cent • credit • darsek • decim • dejebbit • dirak • dollar • drokna • ducat • dukor • galorine credit slip • ilec • kern • klon peag • laertian dinar • lek • lita • notch-rock • prime transfer authority • quatloo • sakto • sous • szeket • t'chak • talon • tri-esta|