Unknown Adjustable Darby

Here are a few photos of an Adjustable Darby Handcuff that I would like to identify.  It is a well made unit with no markings.  The end caps are unusual as they are flat.  The key is one I made and it has 14 TPI and works well in this cuff.  I am assuming it dates to the 1930s to the 1950s, but this is just a guess.  Anyone know the country or origin or manufacturer?  Thanks,  Steve   

I would suggest it is an early Kayser. Mine has a flush polished end cap like the one in the image.

same swivel.

Thanks, Ian.  The old photo is a Kayser Darby that I owned back then.  You made a key for me and also gave me some good information about making Darby keys.  Joe Lauher bought that cuff from me long ago.  The cuff I have now does not have the rounded ends on the bows and I didn't think this one was a Kayser due to the pointed tips.   Thanks,  Steve

Hi, Sorry about that, I thought I had found something useful. The Kayser I have also has rounded ends. Beveled bow ends are common to UK adjustable so I see your point. Others may be able to narrow it down for you to the maker.

After the input from Ian I did some research in the old forum and found a discussion about how to tell the difference between a Kayser Darby and a Clejuso Darby.  The consensus is that the Kayser Darbies have the rounded ends on the bows.  The Clejuso Darbies have the pointed ends on the bows but they have the flat end caps with no punch marks.  Few cuffs have the flat end caps without punch marks.  So, my thought is that my Adjustable Darby is a probably a German Clejuso. 

Steve

I am also quite sure that those are Clemens & Jung cuffs. Probably from 1950´s.

Thanks Steve, Now I can rename the one I have and adjust my records.

Do both have the same amount of teeth?

teeth? wrote: ↑

May 02, 2025

Do both have the same amount of teeth?

The ratchet of my Clemen  & Jung (Clejuso) has 7 notches.