Diver recovers rare sandglass timer from 18th century warship Invincible sunk of Isle of Wight

Georgian warship Invincible sank after smashing into a sandbank shortly after leaving Portsmouth in February 1758.

https://www.thesun.co.uk/news/6535275/diver-recovers-sand-timer-warship-invincible-isle-wight/

Not the one found, but an example of an 18th century sand hour glass.

https://www.aaawt.com/html/gallery36.html