Around 350 items were taken from a lorry park in Mexborough, near Rotherham, at the weekend while filming was taking place near by.
The theft was reported to South Yorkshire police and there is hope that some of the items can be recovered.
Alison Harvey, series set decorator for The Crown season 5, said: “The items stolen are not necessarily in the best condition and therefore of limited value for resale. However, they are valuable as pieces to the UK film industry.”
Among the missing items was a replica of the 1897 Imperial Coronation coach egg by Fabergé is also among the missing items (pictured above), 12 sets of silver candelabra and seven gold candelabra, a clock face of a William IV grandfather clock (leaving the longcase behind), a quantity of Russian icons, a 10 piece silver dressing table set and St Louis gilt Crystal glassware and decanters.
Anyone with information should contact South Yorkshire police or call the police on 101 quoting crime reference number 14/37304/22.