By 1967, Fiat was leading the European market, and its 50th anniversary was coming up. For the occasion, a new series was developed in Turin with more innovative characteristics than earlier models. The new series would be based on the Diamante series, and the name chosen was "Nastro d'Oro" or "Gold Ribbon", marking the "Golden Anniversary" of Fiat's "marriage to the land".

The appearance was a strong evolution of the Diamant series, again penned by Pinninfarina, with the longitudinal ribs of the engine cover now more predominant, and running though to the nose conferring lightness and movement. The colors were slightly changed as well, with a lighter orange for the bodypart, and blue for the mechanical parts, which gave the impression of a dynamic and modern machine. 

The new series wasn't only a styling exercise though. The series introduced new upgraded engines, all now with direct injection and rotary injection pumps, and all but the smallest reverting to a stressed crankcase design. Improved driving ergonomics, a number of new safety features including a lock preventing starting the engine while in gear, new 12 volt electrical system, upgraded gearboxes with synchronizers, and the control-matic three-point hitch now standard on all models, are just a few of the technical features to mention.

Some sources tell, that all models at launch had the option of a Frutteto, Vigneto and Granluce variant, though this has been difficult to confirm.

The first models of the "Nastro d'Oro series"/"Gold Ribbon series", were put into production in 1968.

The 750 was introduced the same year, and was engined and manufactured by OM. For almost a year, it was the largest tractor in the series, until the 850 and 900 started production in 1969.

The 750 together with the 650 and 850, would be the last tractor sold under the OM brand, with the OM company being merged into the Fiat group in 1975, including their truck and bus division.
1975 would also be the last year for the 650, 750 and 850/850S, being replaced by the first 80-series models 780 and 880.
But until 1975, the 750 and other aforementioned models, were sold in Italy under the OM brand, while on the international market, it was sold under the Fiat brand. Except from France, were all models were still sold under the Someca brand.

Both models used a stressed chassis design, with the engines cast-iron crankcase being part of the tractors backbone. 

Unlike most of the models in the Gold Ribbon series, the 750's gearbox was the old seven forward and two reverse, with no synchronizers.
The 750's gearbox did however, offer the mechanically activated on-the-go reduction gear named "Amplicouple", later simply known as "Automatic", as first seen on the 513R, later the 615 and 715. 
With results similar to later and more advanced hydraulically and electrically activated powershift systems we know today, the Amplicouple/Automatic system would act as a quick engage and disengagement of the reduction gear in any gear, preventing the driver from having to come to a stop to engage the reduction gear, when momentum is most needed.
PTO and locking differential on the rear axle were standard. The 750 was also offered with 
draft control / "Control-Matic".

The 750 used OM's four cylinder watercooled, direct injected diesel engine. An updated version of the engine found in the 715. With a displacement of 4.562cc, the engine developed 75 hp at 2.100 rpm and 279 nm at 1.300 rpm, later 80 hp and 313 nm as the 750 Special.

The Gold Ribbon Series tractors enjoyed even greater success than its predecessor, being recognized for their new design, engines and features.
In 1968 alone, when the European market was contracting, Fiat produced a total of almost 60.000 tractors, 42.000 of which in Modena alone, 5.000 more than the previous year. That year also saw the production of the 500.000th Fiat tractor since 1918.