I recently came across some early Zastava leather gear for the M64 and I assume for other early milled Yugoslavian AK's.
I have observed the leather magazine pouches before and they follow the same pattern as the grey/green 4 cell cloth pouches commonly seen.
These leather slings are the same length and hardware as the cloth slings but of older vintage AFAIK.
Just kind of nice to have what I assume are the early accessories.
The top sling is a two piece one sewn together. The one on the M64 is a single piece.