Forces' sweetheart Dame Vera Lynn has appealed for help in tracing a brooch which she lost during the Remembrance Day service at the Royal Albert Hall.
The 94-year-old singer, from Ditchling, East Sussex, said it was of great sentimental value as it had been given to her by Field Marshal Montgomery.
She said she wore it to every military function, along with her medals.
Her family has offered a £150 reward for its return and the opportunity to have tea with Dame Vera.
The brooch is the Africa Star ribbon bar in enamel with the 8th Army clasp.
It was presented to Dame Vera at the Royal Albert Hall more than 35 years ago as a gesture of thanks for her support during World War II.
Dame Vera said: "It means an awful lot to me. I had it on in the circle and then I was feeling it around my lapel.
"I was only thinking to myself how funny it was that this was the same place where Montgomery presented it to me."
Her daughter Virginia Lewis-Jones added: "Financially, it is not worth very much but it holds great sentimental value.
"Whether she loosened it while fingering it during supper afterwards, we don't know.
"I phoned up the Royal Albert Hall afterwards but no-one had found it. It would be lovely to have it returned."