March 2018: Just read this post. There were six SD14s built at AFNE (Argentina) and three SD14s built at Henry Robb, (Dundee, Scotland). Unlike the Pickersgill built ships which had Sulzer engines, built mainly at George Clarks engine works; the Henry Robb and AFNE ships all had Doxford M670J4 engines built at Sunderland. The "M" was to denote engines built to all metric units whereas the Doxford practice prior to these was for some components to be built to British (imperial) units of measurement and some components to metric which was more than inconvenient for manufacturers and repairers in other parts of the world who generally worked to all metric units of measurement. 760 was the bore size of the cylinders; J was the initial of the surname of the Doxford engine designer, Jackson, and 4 was four cylinders:
The AFNE ships were:
Dr Atilo Malvagni
President Ramon de Castilio
Libertardor General Jose de San Martin
General Manuel Belgrano
Almiranti Storni
Neuquen

The Henry Robb ships were:
Salta
Ju-juy II
Tucuman

A Pickersgill built SD14 derivative which was an SD18, the Armadale, was the only Sunderland built SD 14 or derivative fitted with a Doxford engine. Doxfords Engine works was on the south side of the river Wear, Pickersgills was directly opposite on the north side and George Clarks engine works was the next establishment down river to Pickersgills.
Hostilities between Britain and Argentina resulted in a lengthy time between delivery of the Doxford engines to Argentina and their installation into the AFNE ships. We referred to all of these ships as the Salta Class.
Apologies for any incorrect spelling of ship names.

Salta Built 1977. IMO-7405986

Derek and Chris,
It's impossible to define:
Salta or Jujuy II.

Spot on Derek, agree she is most likely Salta.

There were four ships of this type of SD14 as far as I know. All built for ELMA one in Argentina, Dr. Atilio Malvagni
http://www.shipspotting.com/gallery/photo.php?lid=963120

Three by Robb Caledon at Dundee,
Jujuy II, http://www.shipspotting.com/gallery/photo.php?lid=1231694
Tucuman http://www.shipspotting.com/gallery/photo.php?lid=48922
and

Salta.http://www.shipspotting.com/gallery/photo.php?lid=938536

I would say by length of name it is "Salta"

rgds
Derek