Seref Ozen (Istanbul) has very kindly sent me closeups of the embroidery on the collar of a Tekke coat and a Yomud bokche. Here are those of the Tekke coat collar.
These are of the Yomud bokche, which Seref tells me are used as jewelry bags.
Cok tesikur edirim, Seref Bey.
Regards
Steve Price