I got my K0 candy gold set from Mark B who had them painted by Blake Conway, who has done some of Vic Worlds paint jobs. How's that for name dropping? Anyway, they are gorgeous.
The tank is a wrinkle tank and the way I remember it, this was about the time there was a long discussion going on whether there were ever any gold wrinkle tanks. The wrinkles went away about the time gold color was started, Mark was going to sell the bike and didn't want to get in the middle of that discussion so I got his gold tank set because I don't care if there were any in 1970, I have one now.