Jersey's Bomb Disposal Officer is examining a cylinder found on the beach at Gorey.
It was discovered by a member of the public yesterday and reported to police.
But the force has warned that strange objects should be call in immediately, as it seems someone had already dug this one out of the sand.
Police say it is not an explosive, and might be a homemade time capsule.
"If you ever come across anything strange on the beach that you can't identify, always call the Police on 612612 and let us know. You can take photos to send to us and we can get one of our experts down to have a look at it and take it away safely.
We always hope that items located are not dangerous but we prefer to err on the side of caution.
If you're unable to stay with an item, you can give us the location using an app/website called what 3 words."
Jersey and Guernsey both lift trophies in Siam and Muratti weekend
Islanders encouraged to foster with new model of support
International blues musicians play Royal Square for free
Exhibition looks 'beyond the diagnosis' of dementia
Crew found with early effects of carbon monoxide poisoning
Channel Islands' 10 wealthiest residents revealed
Training and Q&A offered to highlight skin cancer risks
Free Portuguese short-film screening for film festival
