Packets of Thames estuary silt

Seven packets of Thames estuary silt. The packets consist of a green label with a drawing of Tower Bridge on it. The words 'ROMANTIC HISTORY SILTED DOWN LONDON-THAMES SAND MUD SILT GATHERED FROM RIVER THAMES ESTUARY BY CROXFORD FAMILY'. Printed on the back of the label are the words 'HISTORY FLOWS ALONG THE THAMES'. A GENUINE SOUVENIR IN FILM TELEVISION RADIO'. A sticker of the Royal National Lifeboat Institute is present on the front of all the packs. The staples that hold the bags and the labels together are starting to rust.