Buckles have ITW markings:
Missing tag, shows evidence of use. Wear pattern and red marker similar to earlier 1980s dated Pattern 83 items in used condition.
“T” on pouch for “Tourniquet” ?
Pouches have no drain holes like most SADF nylon webbing.
Exactly the same layout as tagged example here: https://www.bidorbuy.co.za/item/249858855/RARELY_seen_SACAN_private_purchase_SADF_nutria_R4_mag_chest_webbing_near_mint.html
Removed tag ghost is even the same size and shape, and in the same location. Only difference is Sample 1 has two velcro hook attachment points on the flap while this one only has one.
Another example, also missing tags, is here: http://www.newrhodesian.ca/viewtopic.php?p=8995#p8995