Cone and Key
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In old English law
A woman at fourteen or fifteen years of age may take charge of her house and receive cone and key; that is, keep the accounts and keys.
Cowell.
Said by Lord Coke to be cover and keye, meaning that at that age a woman knew what in her house should be kept under lock and key.
2 Inst. 203.