Essex Police is looking for clues after a trailer has been reported missing from outside a property in Bulphan between January 3 and January 7.
The Ifor Williams twin axel stock trailer and three mini digger buckets were taken, the force confirmed, as they assume the items might be offered for sale.
A spokesman said: “If you have any information, dash cam or other footage in relation to this incident, then please get in contact with us.
“You can let us know by submitting a report on our website or by using our online Live Chat service which is available 24 hours-a-day, seven days-a-week.
“It can be found at the bottom right of our homepage at www.essex.police.uk.
“Visit www.essex.police.uk/digital101 to find out more about our website reporting services.
“Alternatively, you can call us on 101.
“In an emergency always call 999.
“If you would like to make an anonymous report, you can contact the independent charity on Twitter at @CrimestoppersUK, by visiting their website or by calling 0800 555 111.
“Please quote crime reference 42/4150/25 when providing any information to make sure it gets to the right person as quickly as possible.”