The Fontainemelon 144 is a manual wind watch movement that features a sweep second hand. It is likely a transitional version between the 1604 and 1604N models, and is equipped with an adjustable stud carrier but still has a cap jewel plate for the escape wheel. The signature of the movement includes the letter "R" added separately to the 1604 designation. The movement also exhibits different bridge shapes. It was used in watches produced around the period of 1960.
The Fontainemelon 144 features the following functions: