Antique Pietra Dura Marble Desk Obelisk Thermometer Ashford Blue John Derbyshire Circa 1860 Sold and Philadelphia's Centennial Exposition of

and Philadelphia's Centennial Exposition of 1876

as is the top of the handle

David Povey began signing the widows with "Povey Brothers Studio" and the year of completion

please biography below

Ludwig Bemelmans (Illustrator for the Madeline books) and the grandfather of Op Art Victor Vasarley and many more

Antique Pietra Dura Marble Desk Obelisk Thermometer Ashford Blue John Derbyshire Circa 1860 Sold and Philadelphia's Centennial Exposition ofSOLD A fine & large antique black marble & specimen stone desk obelisk & thermometer, Ashford Derbyshire, circa 1860. This large 15. 5" tall obelisk is made of Derbyshire black marble. The obelisk is elegantly inlaid with a band of semi precious polished hard stone surround the mercury thermometer, including Derbyshire Blue John, Polished slate with fossils, Malachite, Carrara marble, polished agates etc. The ivory panel behind the glass thermometer