52MM Lenses fit Randolph Engineering Aviator or American optical Sunglasses ,

this is old stock from the 80"

got them at the military auction

52 mm

Width: 1.92 inches

Length: 1.67 inches

Diagonal: 1.90 inches

Diagonal: 2.10 inches

Top Width: 2.01 inches

(You can see the photo above)

please note there is no logo on the lenses as military cod request