Examine the surface of the metal for an even and consistent layer of gold. Proper gilding should exhibit a smooth and uniform appearance, without visible gaps, uneven patches, or areas where the base metal is exposed. Check if the gold layer adheres securely to the metal surface. Gilded metal should not have any loose or flaking areas. Ensure that the gold layer covers the entire intended area. Proper gilding should extend consistently over the surface without any missing or bare spots. Observe the color and luster of the gilded surface. Genuine gold leaf should display a warm, rich golden hue and a reflective, metallic shine. If the surface appears dull, uneven, or has a different color tone, it may indicate issues with the gilding process, therefore it is not a properly gilt surface. Gold is highly resistant to tarnish, so properly gilded metal surfaces should maintain their brilliance and resistance to discoloration over time. If you notice significant tarnishing or changes in the appearance of the gilded surface, it may suggest improper gilding or inadequate protective measures.