Mark on back of barometer is G & W F in small circle. Very clean high quality crystal thick covering on works very dark hard wood case looks to be ebony it is about 7 1/2 inch across bottom and 15 inch top to bottom. The item “Antique 19th c ebony Wood Wall Barometer Milk Glass Thermometer J W Elberfeld” is in sale since Saturday, October 24, 2020. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “simonnsimon” and is located in Newton, New Jersey. This item can be shipped to United States.

• Maker: Julius Walbrecht Elberfeld
• Original/Reproduction: Original