I just checked my Necchi. It looks very much like that one from the back, though mine is in better condition. Belt looks a llittle rough, but that's no problem. Mine has the VN logo, which means it is pre 1949-50. Necchi dropped the V for Vittorio in 1950. Mine is only a straight stitch machine and does have a BF on the pillar.
I'm in withdrawal. No new machines since the MW. I saw three at the Habitat for Humanity store, but none came home wirh me. An old 66 with scary wiring, a 99 that needs some TLC and a treadle head so worn I couldn't read it. Guess which machine turned the easiest and wanted to sew? The well used mystery.