A token of affection from etymology online:

O.E. tacen "sign, symbol, evidence" (related to tęcan "show, explain, teach"), from P.Gmc. *taiknan (cf. O.S. tekan, O.N. teikn "zodiac sign, omen, token," O.Fris., M.Du. teken, Du. teken, O.H.G. zeihhan, Ger. zeichen, Goth. taikn "sign, token"), from PIE base *deik- "to show" (see teach). Meaning "coin-like piece of stamped metal" is first recorded 1598. The adj. meaning "nominal" is from 1915, from the noun. In integration sense, first recorded 1960; tokenism is first recorded 1962. Original sense of "evidence" is retained in by the same token (1463), originally "introducing a corroborating evidence."