Three altar cards have been stolen from a tomb in Farnborough Abbey.
A set of three altar cards, which contain Latin texts and are used by priests during mass, were stolen from the tomb of a prince in the crypt at the abbey, in Farnborough Road, some time between Sunday February 16 and Thursday February 20.
Hampshire Constabulary this week launched an appeal to find them.
One of the cards is A3 size and the other two are smaller.
Reverend Dom Cuthbert Brogan, Abbot of Farnborough, said: "To steal these things is horrendous.
"It is in the best interests of all concerned that the thieves return these items to us as quickly as possible."
Detective Constable Tim Faltermeyer, who is investigating the theft, said: “The cards are unique and irreplaceable.
“I’d ask anyone who has been offered these for sale, or who knows where they are to contact us.”
Police are currently appealing for witnesses and anyone with information is asked to contact DC Faltermeyer at Aldershot Police on 101 or call Crimestoppers anonymously on 0800 555 111.