What I find interesting on the "Monark" Masi are the fluted seat stay caps, not flat. This is not unusual by the time of the M bottom bracket cutout, but is unusual with the multipart cutout type. In approx. 1971, the Gran Criteriums get the fluted seat stay caps, water bottle braze ons for the down tube, M cutout, brazed on pump peg under the seat lug. Revised graphics too, but a contract Team bike would of course not have Masi graphics.
Worth mentioning that while the magazine article is dated March '71, graphic and print lead times were much longer than today.