Gerber LST - First generation in Micarta.
Top to bottom on first pic - LST Classic in white/Ivory Micarta c. 1981-1985, LST Classic in brown Micarta c. 1981-1982, FSI Maroon Micarta (Folding Sportsman), c. 1981-1982, FSI white/Ivory Micarta c. 1981 - 1982.
Bottom pic - Comparison to their brass body counterparts.
More Gerber nerd history on these knives below.
According to legend, Legendary Blades frontman, Pete Gerber really liked the Folding Sportsman I (bottom knife, bottom picture). He thought this to be the ideal, everyday knife. His only complaint was that it was heavy in the pants pocket. He wanted something with the same dimensions, but lightweight. So, Gerber came up with the LST, which stood for Light - Smooth - Tough. They produced them in both the Folding Sportsman and the Classic, and both in white and maroon, AND a few Classics can be found in black (rare). These were made from 83-85. The problem with this first generation of LST's is that while they were lighter, they weren't that smooth, and they definitely were not that tough. The white ones especially are prone to failure. I have no idea why Gerber made so many classics in white for so long, but the top knife can be found more often promoting reloading equipment than without.
I don't know if Gerber knew they were on to something with this knife, but this turned out to be the beginning of one of largest, longest lasting range of knives in modern knifemaking history. More to come.