Efu was a type of baggage tags which were attached during the Edo period to goods sent by the Imperial Court, the Edo bakufu (Japanese feudal government headed by a shogun), court nobles, samurai families, temples and shrines to clarify who sent the baggage in question.
会符（えふ）とは、江戸時代に朝廷・江戸幕府・公家・武家・寺社などが物資を輸送するにあたって、当該荷物の所属の明示のために付けられた荷札。