Does the field contain currency data ?
Source position: db.pas line 1058
|  published property TFMTBCDField.Currency : Boolean | 
Currency determines how the textual representation of the data is formatted. It has no influence on the actual data itself. If True it is represented as a currency (monetary value). If DisplayFormat or EditFormat are set, these values are used instead to format the value.
| TField.DisplayFormat | 
| TField.EditFormat |