These are ex-Caledonian L1011s operated by Ducor World Airlines / former Liberian World LWA. I think the reg is something like 3C-QRL EQUITORIAL GUNIEA. The other one they have is 3C-QQX an ex LTU machine. They are actually freighters but are bulk loaders, cargo doors not yet fitted!
Nice to hear this one still bears resemblance of Cally colours.