Hi: Someone here (in my country) sells this one (attachment) that comes with 4 round windows instead of two round windows and 4 square grills, so to speak. Did it really exist or is it a toy loco? Thanks
That's not an F7, it is the first type of F Unit, an FT. They were first built in 1939, and produced 1350hp each. The first one is still running in a museum.