hidden reserve(n = noun.possession) - reserves that do not show up on the balance sheet (as by understating values);
is a kind of reserve account, reserve fund
has particulars: cookie jar reserve

cookie jar reserve, federal reserve, federal reserve bank, federal reserve board, federal reserve note, federal reserve system, hidden, hidden tax, home reserve, in reserve, military reserve, pulmonary reserve, reserve, reserve account, reserve assets, reserve bank, reserve city, reserve clause, reserve fund, reserve officers training corps, territorial reserve, valuation reserve