Date: 17 March 1973. Title: The Tower of London Built by the First King's Engineer. Type: Commemorative Cover. Stamps: 3ᵖ "Silver Wedding" commemorative, issued 20 November 1972. Special Handstamp: Corps of R.E. Commemorating Bishop Gundulf, the King's First Engineer and Builder of the Tower of London, BFPS 1381. See: Wiki - Gundulf of Rochester - http://en.wikipedia.org/wiki/Gundulf_of_Rochester
Date: 15 April 1973. Title: Lieut-General Sir William Dobbie GCMG KCB DSO and Malta GC. Type: Commemorative Cover. Stamps: 3ᵖ Machin definitive, ultramarine. Cachet: Maltese Cross with RE cypher. Special Handstamp: Corps of R.E. Commemorating the Governorship of Malta by General Sir William Dobbie (Late R.E.) during which time the island was awarded the George Cross, BFPS 1382. See: Wiki - Malta - http://en.wikipedia.org/wiki/Malta
Date: 12 May 1973. Title: Colonel Blood - The Crown Jewels - and the Engineers. Type: Commemorative Cover. Stamps: 3ᵖ "Silver Wedding" commemorative, issued 20 November 1972. Special Handstamp: Corps of R.E. Commemorating the thwarting by Talbot Edwards, an Engineer Officer, of the attempt by Colonel Blood to steal the Crown Jewels. BFPS 1673 (1673 is the official date of the attempt to steal the Crown Jewels). See: Wiki: Thomas Blood - http://en.wikipedia.org/wiki/Thomas_Blood
