Currency Act than what was taxed out of circulation, the currency depreciated in relation to the British pound sterling. The resultant inflation was harmful to merchants in Great Britain, who were forced to accept the depreciated currency from colonists for payment of debts. The Act limited the future issue of bills of credit to certain circumstances. It allowed the existing bills to be used as legal tender for public debts (i.e. paying taxes), but disallowed their use for private debts (e.g. for paying merchants). The Currency Act 1764 (4 Geo. III c. 34) extended the 1751 Act to all of the British
S-train expansion and new trains). Plans for further extension of system include another two lines, one of which should reach Belgrade Nikola Tesla Airport. "S-Bahn" is also used in German-speaking Switzerland. While French publications of those networks translate it as "RER", the line numbers are still prefixed with an S (e.g. S2). The oldest network in Switzerland is the Bern S-Bahn, established in stages from 1974 and has adopted the term S-Bahn since 1995. It is also the only one in Switzerland to use a coloured "S" logo. In 1990, the Zürich S-Bahn, which covers the largest area, went into service.