Both vintage trunks as well as new ones frequently have edge clamps or bent metal strips that fit around a corner. T-274 is a nickel plated trunk edge clamp that is 5/8" and each leg measures 1 1/4" and has a 90 degree angle.
This particular edge clamp is completely flat on each leg and it's very simple design make it suitable for use on antique trunks from a wide variety of eras as well as more contemporary examples.
Trunk edge clamps both added to the structure of the case as well as provided a decorative accent. They can be placed evening spaced or in a pattern for a more interesting look.