Ask what the face, backing and core are made from instead of judging only the front surface.
Read genuine leather as broad material wording, rather than treating the label as a top quality ranking.
Inspect edges and holes for lifting layers, while remembering that painted edges do not prove a synthetic strap.
Use smell and grain only as clues, since coatings and embossing can change both the appearance and scent.
Curve the strap gently with permission, and avoid flame, sharp scratches, solvents or other damaging home tests.
Read the full guide to leather labels, gentle inspection and useful questions for a seller.