Sample 1:

Likely from mid-1980’s commercial item (catalog here: http://soldiersystems.net/2017/02/21/lowe-vector-catalog/).  Design eventually became standard issue CFP-90 although this earlier one had a better build quality (source: http://oefoif.forumotion.net/t8059-lowe-vector-i-woodland-camo-rucksack). Fabric is like a green dominant ERDL (smaller print than real M81 woodland) and is similar to ALICE pack material, like SADF Niemoller Vest.

No date codes on any plastic buckles: