Type 1

Type

Description (according to Gisburn)

1

Fraction bar is missing in the left-hand value disc.
Top of "d" in the left-hand value disc is irregular.

2

Up-stroke of "d" is straight in both value discs.
Dashes under "d's" are in correct positions.

3

Up-stroke of each "d" is curved to the left.
Bar under "d" in the right-hand value disc is short.