I have not used any kind of polish on the brass. It has only been dusted and wiped down with a soft cloth.There are some small pits near the base edge. The knob on the burner to adjust the flame does not turn. But it should be easily fixed by someone who knows what they're doing. Also, the chimney is lost to time. The item "Aladdin brass Kerosene Oil Lamp Milk glass Shade Hand Painted Flowers" is in sale since Tuesday, May 19, 2020. This item is in the category "Collectibles\Lamps, Lighting\Shades". The seller is "mrob5591" and is located in Mardela Springs, Maryland. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Turks and caicos islands, Bangladesh, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Luxembourg, Monaco, Macao, Martinique, Nicaragua, Pakistan, Paraguay, Uruguay, Russian federation.