Signet
Signet , noun
[Old French signet a signet, French, a bookmark, dim. of signe. See Sign, n., and compare Sennet.]
A seal; especially, in England, the seal used by the sovereign in sealing private letters and grants that pass by bill under the sign manual; -- called also privy signet.
I had my father's signet in my purse.
Collocations (2)
Signet ring , a ring containing a signet or private seal.
Writer to the signet (Scots Law) , a judicial officer who prepares warrants, writs, etc.; originally, a clerk in the office of the secretary of state.