File:Arms-peterborough1.jpg

Summary
Former arms of the Mayor, Aldermen and Citizens of the City of Peterborough. Adopted on incorporation of the municipal borough in 1874, the device impaled the coats of arms of the bishopric (cross keys) to the dexter side with those of the dean and chapter (cross swords) to the sinister side. This became obsolete when armorial bearings were granted and assigned to Peterborough City Council by Letters Patent sealed by Garter, Clarenceux and Norroy & Ulster Kings of Arms dated 06 September 1960 and is now believed to be in the public domain.