I love those old surplus rucksacks. They're all similar in basic configuration, but with small tweaks here and there. A couple years ago, I looked to get a backup for mine, but they were no longer cheap. I have a real problem wanting backups to my favorite pieces of clothing, gear, etc. My old rucksack looks like the day it was bought for nothing, but I want a backup in case I wear it out. So silly, because I'm never going to wear it out unless I slip and it flies off my back and into a wood chipper.
I'd love to see more pictures of that ruck, and if anyone else has photos of theirs, I'm interested in those as well. I remember those being one of the items in surplus stores sitting in giant boxes on the floor for less than $10.