13 left side and 21 right side. This is first variant. Is shown on both of your images. Both numerals 21 are to the right of 'alef'.
13 left side and 2 and 1 are separated by 'alef'. This is the second variant. Mentioned as note in SCWC and as the result, copied by Numista without any explanation in the second line of article https://en.numista.com/catalogue/pieces12103.html
Actually you may improve Numista.
You have images of both sides of the first type, the main article has images of the second type (the year is different, but the type is correct).
Why not to add comment, describing something like that:
Type 1 -...
[your photos of both sides]
Type 2 -... see the main photos of article.
?
It is just if you have time and desire. In this case, chances are large, that there will not be a similar forum question in future.
Regards