Anyone have pictures of Darby handcuff pouches/cases to share?

I have looked all over the internet to find leather cases for Darby handcuffs to compare the one I have to. I've heard that it is legitimate, but I am unsure if the key attachment thing is from the period (WW1) or if a previous owner added it for convenience and wasn't actually a standard thing.

If you have any pictures of what the cases looked like I would really like to see. Below is mine which houses a 1915 Hiatt M&C also with crows-foot stamp.

Silent but descriptive on YouTube has the exact same holster/pouch so I’d say it’s as they were. Been looking myself and it’s the only one I found