The raid on the museum in Chipping Campden took place just after midnight on Monday, November 7, with the gang targeting only silver, which has left the trustees fearful that it may be sold off for melt.
More than 20 pieces of the pieces stolen were by Charles Robert Ashbee, who moved the Guild of Handicraft workshops from east London to Chipping Campden in 1902, and the Hart Workshop, who joined Ashbee at the time and whose company still makes silver today.
They are listed below.
Anyone with information that may help is asked to contact Det Con Adrian Moore of the Gloucestershire Constabulary on 01242 276 170 quoting case number 483 or the curator of the museum on 01386 841 951.
Items stolen from Court Barn Museum
Silver by C.R. Ashbee
1 Silver mustard pot and spoon, 1901-02.
2 Silver salt cellar, 1901-02.
3 Vegetable dish in silver plate, about 1900.
4 Cigarette box in silver and enamel, 1903-04.
5 Silver cup and cover, given by Ashbee to his wife Janet, 1909.
6 Pendant of silver and semi-precious stones, about 1897.
7 Buckle in silver, enamel and turquoise matrix, about 1902.
8 Necklace in silver, enamel and turquoises, 1913.
9 Pendant brooch in silver, gold, diamonds, abalone and semi-precious stones, c.1900.
10 Jam or butter dish in silver, 1903-04.
11 Jam or butter dish in silver, 1902-03.
12 Fruit stand in silver and enamel, 1903-04.
13 Silver milk pot, 1905-06.
Silver by the Hart family (Guild of Handicraft)
14 Rose bowl by Henry Hart, 1972-73.
15 Teapot made by Cyril Frost, an artist and teacher from Banbury, when he was learning silversmithing from George Hart, 1929-30.
16 Dressing-table set, 1933-34, a 21st birthday present to George Hart's niece.
17 Silver clothes brush
18 Silver tray
19 Silver hairbrush
20 Silver and enamel mirror
21 Salt, pepper and mustard set by David Hart, 1982-84.
22 Ciborium by George Hart, 1922-23.
23 Sugar bowl from tea set in silver plate, made in about 1922 by Hart & Huyshe (George Hart and Reynell Huyshe)