Vintage Persian Lamb Collar Black Flawed Patterned Fur Coat Trim Faux?

Persian Lamb Collar Vintage c. ? Maybe as old as 1920s-30s Black patterned fur Has wear around edges consistent with a real piece of this age but Pattern itself appears stamped May be Faux? but my opinion as a long time vintage seller is that it is real persian lamb Lined in smooth woven fabric Has furrier hooks for a closure Large fabric covered metal snaps at top to affix to some long forgotten garment Measurements in description