Copyright Anthony P. Smith, November 2024 Doubles differentials (20 changes per lead) No. Name Notation lh RW ref Notes 1514 Ironstone 5.1.3.5.123.3.145.1.145.5.145.5.145.1.145.3.123.5.3.1 21534 00/159 Non-method when rung Triples differentials (4 changes per lead) No. Name Notation lh RW ref Notes 1515 North Utsire 34567.147.34567.1 3126475 06/1250 Quarter peal Royal differentials (32 changes per lead) No. Name Notation lh Notes 1516 Winkie Banana - 1470 - 1470 - 58 - 58 - 1470 - 1470 - 58 - 58 - 1470 - 1470 - 36 - 36 - 1470 - 1470 - 36 - 36 8721430956 Plain course False Royal differentials (10 changes per lead) No. Name Notation lh RW ref Notes 1517 Pentagon Bridge 56.10 - 56 - 10 - 56 - 10 5341290786 17/1020 Quarter peal of Spliced Maximus differentials (12 changes per lead) No. Name Notation lh RW ref Notes 1518 Tripartite Bridge 36.1T - 56 - 1T - 56 - 1T.36.1T 53412ET90786 20/634 17/204 Quarter peal