There is no spanish translation for bullets S and SS; both designations remained in use in all the South American countries that used the 7.65 mm Mauser. Belgian cartridges headstamped F S N 35 and F SS N 39 were made for export while those headstamped F N 35 and F N 39 were made for local use (Belgium).
Headstamps indicating special purpose projectiles are in french language:
P = Perforante (same in spanish)
PT = Perforante Traçante (Luminosa Perforante was the current designation; Perforante Trazante and Perforante Trazante Luminosa are wrong designations and were never used)
T = Traçante (Trazante Luminosa; this is an ordinary tracer)
I = Incendiarie (Incendiario)
E = Éclairant (Reglaje; Spotter)
All of these loading were exported to Argentina, but not exclusively.