Issued to Officers (non traffic) and Clerical staff of the MMTB for free travel. Traffic Officers had their badges.Demonstrates the method of identifying MMTB Officers and Clerical staff who were entitled to free travel on trams.Round silver MMTB Officers and Clerical Staff badge - stamped No. "302" and with raised writing "M&M Tramways Board" with a silver ring through the top of the badge, to allow it to be attached to a key ring. On rear in raised letters "K. G. Luke Melb". badges, tramways, trams, mmtb, travel passes, staff