unsecured advances "unsecured advances", "unsecured loans" and "unsecured credit facilities" mean respectively advances, loans and credit facilities made without security or in respect of any advance, loan and credit facility made with security, any portion thereof which at any time exceeds the market value of the assets constituting the security, or where the Central Bank is satisfied that there is no established market value, the value made on the basis of a valuation approved by the Central Bank. ACT 102 - BANKING ACT 1973 [Repealed by Act 372] 26. Restrictions on payment of dividends and grant of advances and loans.