I have something in thegarage that may fit the need.
I don't know whether they are RC30s but they are Pace rigid forks.
They have the old style Pace crown (pre Monobox crown) with the clamping arrangement where the 4 bolts pinch the slotted crown together to hold the legs and the steerer in place. The legs are a yellow to orange fade (yellow at the top) and have a couple of (smallish) areas of damage to the paint. The dropouts are in excellent condition, and (if they are steel legs) there's no sign of rust.
I don't think I've got a steerer for them, but I can look in the "toyboxes" later if you are interested.