This is a lot of two Gillette safety butterfly razors. Both of them have patina I need to be cleaned. One of them has a Gillette blade and the other one has a Schick blade. The green one, from the 1930s, twists off from the top to open and the other one, from the 1960s, has a twist open on the bottom. The measurements are in the pictures. Be very careful with these sharp blades! Thank you!