hermes b11381|Jumbo belt buckle & Reversible leather strap 38 mm Step 1: Check the Price. The first thing to consider when determining the authenticity of a Louis Vuitton belt is the price. Genuine LV belts are never sold at discounted prices or on sale. If a seller offers you an LV belt at a ridiculously low price, chances are it’s fake. Step 2: Look at the Belt Buckle. Subscribe