The Reserve Bank of Australia is considering whether it can move to 100 per cent ownership of its associate, Securency, The Age reports. The RBA would then seek to sell the business through a trade sale.Securency makes polymer substrate used in the production of plastic bank notes. The RBA owns a 50 per cent share in the firm, alongside Innovia Films.Candover Partners, a private equity firm in the UK, is seeking to rationalise its investments.The RBA valued its holding in Securency at June 2009, at a value of $44 million, up from $35 million in 2008.