Economy of Liechtenstein
The economy of Liechtenstein is based roughly equally on services (especially financial services) and industry, with a small but significant agricultural sector. The country participates in a customs union with Switzerland and uses the Swiss franc as its national currency. It imports more than 85% of its energy requirements. Liechtenstein has been a member of the European Free Trade Association (EFTA) since 1991 (previously its interests had been represented by Switzerland). It also has been a member of the European Economic Area (EEA) since May 1995 and participates in the Schengen Agreement for passport-free intra-European travel.
Coat of arms of Switzerland
Alternative shapes of the heraldic shield were also in frequent use, and still remain in use in spite of the 2017 legislation. 
A frequently seen shield shape is the "Iberian" or "curved" type, specifically used to mark Swiss embassies and border crossings, and also used on the five franks coin. 
Another frequently seen variant is a Renaissance-style articulated shield, shown as being held by the national personification Helvetia on the ½, 1 and 2 franks coins.