the Portuguese class 2600 electric locomotives

A Portuguese Post Office stamp from 1981.

Not only the loco in this postcard of Santarem is French, so are the passenger cars: two corail type and then some "inox" or stainless steel type.

Two 2600 class at Vila Nove de Gaia (with cement wagons?) (Pedro Soares)

If it looks like the French SNCF BB15000 class (nicknamed the Nez-Cassée or broken nose), it's because they were built by Alsthom/MTE. The first 12, numbers 2601-12 are from 1974. Numbers 2621-29 are from 1987, these are referred to as the série/class 2620.

Axle arrangement: Bo-Bo
Overhead system: 25 kV
Output: 2870 kW (3849 hp)
Tractive effort: 205 kN
Service Weight: 78 tonnes