There is also some discoloration on the white part of the top of the shade. You can see it in the photos.
I believe this occurred during the making of this lamp. It is otherwise in very good condition. The item "Antique Green Cased Glass Lamp Shade Art Nouveau Student Oil Kerosene Hanging" is in sale since Thursday, April 18, 2019.
This item is in the category "Collectibles\Lamps, Lighting\Shades". The seller is "coyotemoonantiques" and is located in East Sandwich, Massachusetts.
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, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Aruba, Barbados, Gibraltar, Iceland, Pakistan, Uruguay.