appearance Australian cash color colored colors colour coloured colours currency decimal denominations dollars finance low-denominations monetary money not-in-circulation notes numismatics old outdated paper-money security success textures value variations variety wealth bank banking clear coins container declared earnings emergency fund funds glass hoard hope jar personal planning pocket poor rain rainy rich save savings secret stash tax taxman treat undeclared wages wish american banknotes collectors high-denominations lower-value monetary-value potential values aussie decimal-currency historic history low-value obverse pre-decimal-currency replaced superceded superseded reverse