Mozart composed two new symphonies in the Autumn of 1773, after having returned to Salzburg from Vienna. The first of the two was the Symphony No.24 In B Flat K.182, and the second was the Symphony No.25 in G Minor K.183

This symphony was one of two which Mozart composed in a minor key  the other being the Symphony No.40 in G Minor K.550. The latter can be identified with some of Mozarts most troubled and agitated music, reflecting those difficult moments in his life. However, the twenty-fifth symphony is thought to have been composed as part of a sudden wave of minor-key symphonies which appeared in the later 1760s and early 1770s  among others were composed by Vanhal, Ordonez, and Joseph Haydn.

Available here is the study score for one of Mozarts two symphonies composed in a minor key, the Symphony No.25 in G Minor K.183. This score is ideal for study and perusal usage.