Choose a brand that names its leather clearly, ideally full-grain, and shows...

https://www.pop-bookmarks.win/look-for-full-grain-leather-clean-edge-finishing-and-a-readable-warranty-that

Choose a brand that names its leather clearly, ideally full-grain, and shows close-up photos of stitching and edges. Read the warranty before buying, and check how initials are applied so you know whether they’re stamped, embossed, or printed.