The life expired AG class coaches built by Metropolitan RCW Co in the 1880's were converted to AGV class brake vans in 1935. One other coach (AGB9) had originally been a member of this class, but had become an AGB class buffet car, was also converted to an AGV at this time. It had a completely different body and is treated on a separate page. The WAGR outline diagram is shown below. The whole class was reclassified to ZAG and then finally ZG as shown in the table below. Throughout they retained their original carriage numbers.