Not in wartime, but in recent years, the British Museum, a prime holder of foreign antiques, reported they lost thousands of items. Some were found or recovered

Not in wartime, but in recent years, the British Museum, a prime holder of foreign antiques, reported they lost thousands of items. Some were found or recovered, but some were confirmed as stolen. https://www.bbc.co.uk/news/articles/crgy4w221z5o https://www.bbc.co.uk/news/articles/crgy4w221z5o