Fleet 2 biplane R-146 was registered for only 9 months.

Самолёты на фотографии: Aircrafts on the photo: Fleet Model 1 / 2 / 7 Fawn - КанадаCanada - 1928

There is no registration visible on this DH.60 Moth, only the name "Antulio", but it is confirmed as a Cirrus II model and the photo is filed as R-112.

Самолёты на фотографии: Aircrafts on the photo: De Havilland Moth / D.H.60 - ВеликобританияUnited Kingdom - 1925

DH.60G Moth R-142 with built-up rear decking of the type used on coupe conversions, although no canopy is evident here. The "Hangar Fernando Menendez" should help to identify the location.

Самолёты на фотографии: Aircrafts on the photo: De Havilland Moth / D.H.60 - ВеликобританияUnited Kingdom - 1925

R-128 is identified as a Fokker Super Universal but the original photo quality was sufficient to reveal the US identity NX9786 on the rudder.

Самолёты на фотографии: Aircrafts on the photo: Fokker/Atlantic F.9 Universal / F.18 / F.XI Super Universal - СШАUSA - 1926

The photographs in this article are those submitted as type identification for the official Registration application. This photograph was filed for R-130 but examination of the figures on the rudder reveals "1780" - the remains of US registration NC1780, thus it is actually the aircraft that became R-131, Ford Trimotor 4-AT-11. Although it lacks an Argentine registration it has been repainted in Trimotor Safety Airways titles. Sadly the name below the cockpit windows is obscured by the starboard engine - but it is not "Rio de la Plata".

Самолёты на фотографии: Aircrafts on the photo: Ford Tri-Motor / 4-AT / 5-AT - СШАUSA - 1926

The photograph submitted for R-131 shows the correct aircraft, Ford 4-AT-11, still wearing the full US registration NC1780 on the rudder and with NYRBA titles (New York, Rio and Buenos Aires Line Inc) clearly visible on the fuselage side so it presumably pre-dates the photo above. Use of 'exemplar' photos for type identification on documents was fairly common.

Самолёты на фотографии: Aircrafts on the photo: Ford Tri-Motor / 4-AT / 5-AT - СШАUSA - 1926

Sikorsky S-38 R-129 of Trimotor Safety Airways with the name "Washington" large and clear on the nose.

Самолёты на фотографии: Aircrafts on the photo: Sikorsky S-38 - СШАUSA - 1928