On Sat, 12 Jun 2021, Tony Duell wrote:
I wonder if in the original list, a '1' was
misread as a '7' or vice
versa. I am told that in some countries the '7' is conventionally
written with a crossbar across the downstroke to avoid this. My father
always did this, for all it is not common in England.
In Germany, we *always* write a bar across the 7. I don't like uncrossed
sevens because they are ugly ;-) and hard to distinguish from a 1.
Christian