Thieves stole a series of stamp books from a property in Woodhouse.
The Sheffield South East Local Policing Team said the collectors' items were taken on Saturday, January 21.
A police spokesperson said the five 'First Day Covers' pinched contain first edition stamps on envelopes.
They added: "The folders they are contained in are a leather type material and are black, red, and blue in colour."
Anyone with information is asked to contact police on 101.