Blyton Differential Doubles

Classification
Differential Doubles
Place Notation
5,1.3.5.345.3.5.1.3.5.145
Lead Head
21453 (Code: z)
Symmetry
Palindromic
Hunt Bells
None
Lengths
20 rows per lead
120 rows per course (6 leads)
Download as image
Numbers
Grid
Data Source and Copyright
Details on the about page.