Sheridan Silver Streak 5mm I bought in mid sixties. Logged alot of miles strapped to the handlebars of my wannabe Schwinn Stingray exploring the backroads, killin' things I thought needed killin'. Nobody raised an eyebrow, imagine that today. Still have the Sheridan & still killin' things. Come to think of it, what's left of the bike still might be in my folks old barn.