Optional Integer. The LCID attribute can be used to specify the country/region whose currency format is being used, for example, ...

Optional Integer. The LCID attribute can be used to specify the country/region whose currency format is being used, for example, 1033 for the United States. 
Two special cases involve the euro symbol format. If LCID = -1 (0xFFFFFFF), the euro symbol is added as a prefix to the number. If LCID = -2 (0xFFFFFFE), the euro symbol is added as a suffix to the number. The number of decimal digits is 2, although this can be overridden by the Decimals attribute of the field. The euro currency symbol is equal to 0x20AC in UCS-2.