Vintage Sweater Clip - 919 $15 or $12 w/offer

This vintage sweater clip could come in handy. These sweater clips were trendy back in the 1950s - 1960s to keep sweater cardigans especially ones without buttons in place when worn. However, I never seen a sweater clip with such a long chain. It may have been a modified one. I get the impression that the clips alone are vintage and the chain was later added. It perhaps was worn as a necklace. Perhaps the clips were connected to each other when worn. But then it would have been better in that case to add a large jump ring in between the two clips I would think.