Love it or loathe it, royal memorabilia is big business. Huon Mallalieu takes a look at the commemorative souvenirs of the past and considers if they ever really make an investment for the future; while Agnes Stamp picks out some of this year's most eyecatching trinkets.

Royal enthusiast Margaret Tyler — who is approaching her 80th birthday —  looks at a picture of a young Queen Elizabeth II during her coronation.(Credit Image: © Elizabeth Dalziel/ZUMA Press Wire)
Love it or loathe it, royal memorabilia is big business. Huon Mallalieu takes a look at the commemorative souvenirs of the past and considers if they ever really make an investment for the future.