First produced in 1933, early Zippo lighters were rectangular, and a 1/4 inch taller than Zippo lighters produced These days, all the hinges are soldered to the outdoor of the lighter case. These days, Vintage lighters are still manufactured in Brushed Brass, Brushed Chrome, Prime Polish Brass, Prime Polish Chrome, Sterling Silver, and Street Chrome base models where they feature the enduring vintage slash. Every lighter has a bottom stamp signifying the year it was once made, is refillable, and subsidized by Zippo’s famous lifetime guarantee