AHM/Roco tooled the 3500pd fifty years ago. The tooling was pulled out of retirement and pressure tested back when we commissioned them to mold a batch in the 1990s. The tooling was on its last legs back then. Most likely, the tooling has been destroyed by now. Rapido’s model is HO, the first 3500pd in that scale as far as I know.
Regarding the coil car, we did acquire the molds from Railyard Models. They need some repair and some upgrades, to the point where it may be cost prohibitive to bring it back. But we will see.