As per the title and screenshots, just a guard wearing a big cube, tested with only TR loaded to be sure the issue is therein. The item in question is T_Imp_Legion_BroadswordBroke_01 in the inventory of TR_m4_imp_guard_s00000001 (Edit: checked the editor and it seems that the depricated item is still present in the T_Mw_Random_WeaponsLongImperial table.)