![Old navigational instruments. Vintage telescope, sextant and quadrant. 18th century. Museum of History and Navigation. Riga. Latvia Stock Photo - Alamy Old navigational instruments. Vintage telescope, sextant and quadrant. 18th century. Museum of History and Navigation. Riga. Latvia Stock Photo - Alamy](https://c8.alamy.com/comp/RC4KY7/old-navigational-instruments-vintage-telescope-sextant-and-quadrant-18th-century-museum-of-history-and-navigation-riga-latvia-RC4KY7.jpg)
Old navigational instruments. Vintage telescope, sextant and quadrant. 18th century. Museum of History and Navigation. Riga. Latvia Stock Photo - Alamy
![18th Century French Library Telescope on Stand (Lot 142 - Session II: Fine & Decorative ArtsJun 17, 2016, 10:00am) 18th Century French Library Telescope on Stand (Lot 142 - Session II: Fine & Decorative ArtsJun 17, 2016, 10:00am)](https://www.lelandlittle.com/images/inventory/medium/145/145891_2.jpg)
18th Century French Library Telescope on Stand (Lot 142 - Session II: Fine & Decorative ArtsJun 17, 2016, 10:00am)
![Sold Price: A mid-18th century 2 ¾ inch Gregorian reflecting telescope, signed John Bird, London. - January 2, 0121 11:00 AM GMT Sold Price: A mid-18th century 2 ¾ inch Gregorian reflecting telescope, signed John Bird, London. - January 2, 0121 11:00 AM GMT](https://image.invaluable.com/housePhotos/Gildings/07/692307/H0521-L238981927.jpg)
Sold Price: A mid-18th century 2 ¾ inch Gregorian reflecting telescope, signed John Bird, London. - January 2, 0121 11:00 AM GMT
![A late 18th century Telescope by William Harris - Antique Scientific Instruments and Globes - Cameras 2017/09/28 - Realized price: EUR 938 - Dorotheum A late 18th century Telescope by William Harris - Antique Scientific Instruments and Globes - Cameras 2017/09/28 - Realized price: EUR 938 - Dorotheum](https://www.dorotheum.com/fileadmin/lot-images/39D170928/normal/fernrohr-von-william-harris-476779.jpg)