This is a pair of old-school frame-mounted friction shifters suitable for vintage road bikes or a modern project that could use some retro class.
These are sometimes known as "suicide shifters" due to the fact that you need to remove one hand from the handlebars to reach down and use them, so obviously you get some Cool Points* by using these.
*Cool Points are not redeemable with Plain Bicycle and have no intrinsic cash value.
"Friction shifters take some getting used to, but are amazing if you want to feel more in tune with your bicycle while shifting and trimming gears." - Garrett