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Tranquillitas. -- Tranquillity. The companion of peace (Comes Pacis). Security and tranquillity, or quiet, are usually found united, and on some coins are typified under a similar figure and with similar attributes - namely, those of a woman resting her left elbow on a pilaster, and holding the hasta in her right hand. The effigy of Tranquillitas is seen on a silver coin of Antoninus Pius, as a female standing with a rudder and ears of grain, and with the inscription TRANQuillitas TR POT XIII (or XIIII) COS III (A.D. 153). Also on a gold coin of Antoninus Pius with the reverse legend TRANQVILLITAS AVG. It is truly appropriate to the reign of this wise and good emperor. Not so the following.