A number of years ago I saw lots of K’s on Ebay with gold pins. At the time, all K came with silver pins, or so it seemed. Also some poorly made bamboo boxes. @mulveling would know if these were genuine.
The only sources I heard talking about counterfeits were people in the business, with vested interests.
I’ve wondered about counterfeits too, and it’s kept me from buying second hand.
Nice photos, M!