Retro 1960s or 1970s vintage Can O Mat kitchen wall mounting can opener. This can opener is marked as model 45-S and has a white body with a chrome handle. It measures about 7 1/2" long overall.

This can opener is in working condition as shown (the cutting wheel lifts up when you turn the crank backward), but it is missing the mounting bracket and there is some wear to the paint and minor dotting to the chrome.