Mention has been made here regarding variation in stature over the years and this has also been discussed from memory on this Forum before. As an example, if one was to try to fit into a military uniform of the the 19th century, it would likely be far to small, as our average height and build has changed. The same is likely to apply to grips of weapons, so how does one establish if the subject Katar is of "normal" size for the period, or made for a boy?
Attached is a link of research done in the UK which clearly shows how we have changed in average size over the centuries. http://www.ox.ac.uk/news/2017-04-18...r-2000-years-0#