Folded wire head chain

A collector sent me photos of two Reinigungsketten of the twisted wire chain type with the standard rotating head kcy marked, but with the patch loop made of folded wire instead of machining. I had never seen this variant before but they seem original to me. He says me that they come from an "arr43" and "arr4" kit respectively.

Antoni

My arr41 kit (E/WaA750) has a kcy marked chain with traditional swivel link and steel beads. One of my arr4 kits (E/WaA392) has the kcy late variant with steel wire patch loop, swivel link, the two separate beads & then twisted wire.

A known original late variation. Some are kcy marked; others appear identical but are unmarked.

Thanks pwcosol and Slash for the information. I didn't know this late kcy variant.
I enclose a picture of this chain from another member of the forum, thanks Trinxet.

Antoni