My Nuovo Falcone project came with a WM2-18 front rim and a WM3-18 rear rim as detailed below. I suspect that at least one of these rims is not original given the Akront / Borrani mis-match.
Front Wheel: Akront 18-1.85.36-S-118S
Rear Wheel: Borrani WM-3/2.15-18/36 RM-01-4402
Are these the correct widths? The parts manual seems to indicate a WM3 for the rear, but I don't see a specification for the front.