It's a 1601 gold case with an 18k original blue sigma dial. If you search, It's still for sale. If you let me know, I can negotiate the price!! (Likes 4)It's 1601. If you search, It'll come up. It's such a rare specimen that you can't even search by model name. It's an original with a gold case and blue plate.
https://link.VIVER.co.kr/64xi6q (Likes 3)