 Two-thirds of the estimated value is the usual extent of a loan; four-fifths is advanced on silver, and five-sixths on fine gold.State and municipal bonds may be pledged up to a maximum of L150, the advance being 80% of the value, and a fixed interest of 6% is charged upon these securities.The values are fixed by professional valuers, who are liable to make good any loss that may result from over-estimation.