These 21 wagons were bought from ANR in 1978 and entered service in WSR (30172, 30174 - 30192). They are listed as "converted from RH" on the record card. The wagons involved from ANR numbers RH 825, RH 827, RH 831, RH 835, RH 837, RH 839, RH 840, RH 841, RH 846, RH 853, RH 860, RH 861, RH 862, RH 870, RH 872, RH 873, RH 874, RH 876, RH 877, RH 878, RH 880 and RB 836, RB 842 (a total of 23) sold to WAGR in 1978.  One of these 23 probably became WSS 30193 as that is also noted as converted from an RH.  More details are here. They were all built in 1943 as class RB for Commonwealth Railways.

WSR 30188 was written off in 1991.