In the early 60's, Fiat launched an effort to streamline their lineup, with the intent of making their tractors easier to market and service, thereby strengthening their position internationally. 
 
Fiat tractors had a reputation for being reliable, easy to maintain, and well priced. But not exactly for being or having a cohesive and original design language.
For the replacement of the 100 series, Fiat therefor decided to hire the help of non other than Pinninfarina, the studio behind some of the most beautiful cars in history, and for many years Ferraris preferred designer and coachbuilder.
 
Introduced in 1965 the new, and officially Fiats first series, would be known as the "Diamond Series".

The 215 was the smallest tractor in the lineup, and a direct successor to "La Piccola".
It was sold in Italy and internationally as the Fiat 215, but in France it would be sold as the Someca 215. Someca being the agricultural arm of Fiats French subsidiary Simca.

As part of Fiats new philosophy of streamlining its products, the 215 was only sold in four versions, compared to the +7 versions of its predecessors.
A general utility, a vineyard (Vigneto), a plantation (Frutteto) and a mountain version (La Montagna) were now offered to costumers.

The 215 was constructed using a box section steel frame. In one end attached to the gearbox and differential casing. The other end would split into two half's and embrace the engine, while resting on the front axle.

The gearbox was a six forward and two reverse, and had PTO and locking differential on the rear axle as standard.
As a new addition to the "La Piccola" platform, the standard 215 came with an extra mid-mounted PTO, designed for mid-mounted mowerbars, making the tractor an economical alternative for the important haymaking cycle.
 
All variants adopted a two cylinder, watercooled prechamber diesel engine, with a displacement of 1.135 cc, developing 22 hp at 2.300 rpm, and 67 nm at 1.520 rpm.

The Diamond Series enjoyed considerable success, being recognized for their new and modern design, performance, price and reliability.
Production at Modena rose quickly from 34.088 tractors in 1964, to 41.156 in 1966.