Privy token
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
A false mark or sign, forged object, counterfeited letter, key, ring, etc., used to deceive persons, and therebv fraudulently get possession of property.
St. 33 Hen. VIII. c. 1.
A false privy token is a false private document or sign, not such as is calculated to deceive men generally, but designed to defraud one or more individuals. Cheating by such false token was not indictable at common law.
Pub. St. Mass. 1882, p. 1294.