WIW

I recently acquired 2 RB Mopar magnetos & am wondering what they are worth. One is a Vertex with a mechanical tach drive & looks to be rebuilt in the inside, new cap & rotor, new points & condenser. The outside housing needs some cleanup, & it will bite you if it's spun. The other is a Vertex, Jack Cotton conversion that use an external coil with no tach drive. From looking at it, it needs to be gone through because the inside parts look pretty old. I also received a Vertex buzz box in order to time a mag, but that's all I know about the box or mags. Any help will be greatly appreciated.