I like the scales of the one in the middle.

Does anyone know what SAK that is like the tinker but had a lock with a folded sheet metal push button, to the left of the main blade when the knife is oriented upward, that had PUSH on it. The lock did not release like a normal liner lock, instead you pushed down on this ~2mm x 4mm lever instead.

It was the first knife my dad gave me in the bow scouts. I lost it my first day of summer camp and have not been able to find a replacement.