I'll just answer for the Euro:

European — €1.234.567,89 EUR

Normally you'd use either the euro symbol or the 3-letter abbrevation, not both at the same time. The combination looks a bit odd, but is perfectly understandable.

The style guide used by the institutions of the European Union includes rules for expressing monetary units. The most important ones:

• Use the written name ('an amount in euros') when a monetary unit is referred to generally but an amount is not included
• ISO code ‘EUR’ followed by a fixed space and the amount in figures in written text (compulsory in legal texts). (In English, Irish, Latvian and Maltese. In all other official EU languages the order is reversed: 250 EUR).
• The euro sign € is primarily used in graphics. However, its use is also permitted in popular works and promotional publications (e.g. sales catalogues). No space after the euro sign: €35.

My personal preference would be €1.234.567,89 for most texts (that feels most natural and familiar) and 1.234.567,89 EUR for legal/formal documents (or EUR 1.234.567,89 when written in English).

UPDATE: Complete list of currency formats.

I'll just answer for the Euro:

European — €1.234.567,89 EUR

Normally you'd use either the euro symbol or the 3-letter abbrevation, not both at the same time. The combination looks a bit odd, but is perfectly understandable.

The style guide used by the institutions of the European Union includes rules for expressing monetary units. The most important ones:

• Use the written name ('an amount in euros') when a monetary unit is referred to generally but an amount is not included
• ISO code ‘EUR’ followed by a fixed space and the amount in figures in written text (compulsory in legal texts). (In English, Irish, Latvian and Maltese. In all other official EU languages the order is reversed: 250 EUR).
• The euro sign € is primarily used in graphics. However, its use is also permitted in popular works and promotional publications (e.g. sales catalogues). No space after the euro sign: €35.

My personal preference would be €1.234.567,89 for most texts (that feels most natural and familiar) and 1.234.567,89 EUR for legal/formal documents (or EUR 1.234.567,89 when written in English).

UPDATE: Complete list of currency formats.

I'll just answer for the Euro:

European — €1.234.567,89 EUR

Normally you'd use either the euro symbol or the 3-letter abbrevation, not both at the same time. The combination looks a bit odd, but is perfectly understandable.

The style guide used by the institutions of the European Union includes rules for expressing monetary units. The most important ones:

• Use the written name ('an amount in euros') when a monetary unit is referred to generally but an amount is not included
• ISO code ‘EUR’ followed by a fixed space and the amount in figures in written text (compulsory in legal texts). (In English, Irish, Latvian and Maltese. In all other official EU languages the order is reversed: 250 EUR).
• The euro sign € is primarily used in graphics. However, its use is also permitted in popular works and promotional publications (e.g. sales catalogues). No space after the euro sign: €35.

My personal preference would be €1.234.567,89 for most texts (that feels most natural and familiar) and 1.234.567,89 EUR for legal/formal documents (or EUR 1.234.567,89 when written in English).

I'll just answer for the Euro:

European — €1.234.567,89 EUR

Normally you'd use either the euro symbol or the 3-letter abbrevation, not both at the same time. The combination looks a bit odd, but is perfectly understandable.

The style guide used by the institutions of the European Union includes rules for expressing monetary units. The most important ones:

• Use the written name ('an amount in euros') when a monetary unit is referred to generally but an amount is not included
• ISO code ‘EUR’ followed by a fixed space and the amount in figures in written text (compulsory in legal texts). (In English, Irish, Latvian and Maltese. In all other official EU languages the order is reversed: 250 EUR).
• The euro sign € is primarily used in graphics. However, its use is also permitted in popular works and promotional publications (e.g. sales catalogues). No space after the euro sign: €35.

My personal preference would be €1.234.567,89 for most texts (that feels most natural and familiar) and 1.234.567,89 EUR for legal/formal documents (or EUR 1.234.567,89 when written in English).

UPDATE: Complete list of currency formats.