Tag: PRO 23 Archives and archivistsThe mission, should you choose to accept it …Monday 16 September 2019PRO 23 is a unique project for a number of reasons, none less so...Archives and archivistsDigitally safeguarding a seal mould collection: a volunteer’s perspective on PRO 23Monday 29 April 2019There has recently been a series of blogs highlighting the PRO 23 project, which is...Records and researchWhat is a seal mould? Introducing record series PRO 23Monday 26 November 2018The Collection Care Department at The National Archives holds an historic collection of moulds...