Wow, don't think I have ever seen one that has only one of the numbers doubled. Perhaps @Fred Weinberg might comment.
Welcome to CT, since I don't know enough about this to answer here's some guys that will- @paddyman98 @Rick Stachowski Thanks, Jacob
Actually i got a better closer picture and you can see that all the numbers got doubling. Maybe it can be a doubled die. Ill edit it to show it to you. Maybe you can confirm again for me if you dont mind