Found these at a thrift shop in Laguna Beach, CA many years ago and they have been in a drawer since then. The key case may be authentic, but I am not an expert. The hallmark is very faint but still visible. Has 4 hangers for keys, zipper works well on inside small pocket, additional small pocket on other side. Working snap on inside marked ‘SUN D H’. Throwing into the sale two other items I think are authentic but am not sure because they are not marked (or the mark is no longer visible.) Please note that all items show wear: Small fold over case with vachetta leather side gussets: 4 5/8 inches by 2 ¾ inches wide. Interior working snap is marked ‘SHB SWIP 25’). This may have had a marking but is completely worn off, see pix. Cracking at flap corners, leather is worn. Small notebook with left and right leather interior slide pockets, original gold mechanical pencil and note paper: 4 ¾ long by approx. 3 inches wide. This item is probably in the best usable condition of the three but can’t find any authenticating mark. The gold pencil appears to have a ‘made in’ stamp but I can’t make out the location, see pix. Brittle corners, some staining, minor cracking starting.