Because the opening is very similar to a horn, the old beeswax is called a bell mouth. The identification of the bell mouth has a certain knowledge. Many players think that the main opening is like a horn.
The bell mouth should mainly be considered from the aspects of shape, color, patina, texture, etc. The opening should be like a horn, it is gradually opened, the color is also from deep to shallow, the shallower the opening, the natural excess However, where the beads of the coarse holes, the place where the rope passes is naturally weathered. This is not easy to falsify. If there are no weathering lines in the coarse holes, it is mostly artificially ground. After mastering these two points, you can remove 80% of the "old feature honey" on the market.
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