This minor oversight has been around for a VERY long time. Seems to keep getting overlooked. In Mephalan Vales Region 31,-15 there is an NPC named Avelo (ID: TR_m2_O_Avelo), a couple of Skeleton Barbarians, and a Dead Ordinator in Mourning (ID:TR_M2_D_ordinator_necro).

Now judging by the scene the NPC Avelo has killed the Ordinator in Mourning with the help of her Skeleton Barbarian minions and is now stealing the dead Ordinator in Mourning’s armor.  Then the player comes by and interrupts her.  This all seems normal, however if you’ll notice, both Avelo and the dead Ordinator in Mourning are wearing a left pauldron. This is the issue here.
One of the two should have the left pauldron swapped out for a Right one. Ordinator in Mourning Pauldrons are currently very rare in TR. The only others are on a lighthouse guard somewhere in Necrom, in a closet in Necrom’s Watch Barracks, and in the test cells.

Also, it seems this was done by mistake because the number of instances for the left pauldron are 5 while the right are 3. This should indicate that there should actually be 4 instances of both.