Safeguarding the RTS broadcast lacquer disc: Challenges of a multifaceted project – At IASA annual conference, 3rd October 2019 (HILVERSUM, NL)

The 80,000 lacquer disc audio recordings of RTS (Radio Télévision Suisse) are a unique collection spanning from the 1930’s until the 1950’s. The disc collection covers contents ranging from radio dramas to classical music, news reports, etc. The various types of lacquers used throughout the years make this collection an interesting case study, from a chemist and/or a curator point of view. The digitization of these broadcast archives is an 8-year long service provided by the French GECKO company.

Eric Monge, IT manager at GECKO, will present MADAMS, GECKO’s in-house workflow and database management system. Karen Beun, production manager, will focus on the technical workflow, and go into details about the metadata provided and the various disc playback techniques used throughout the project. Finally, our restoration manager will present the digital restoration aspect of the project.

Rebecca Rochat, preventive preservation expert, will present her digital guide with the results of her several-year long research on lacquer discs, which is expected to be an important landmark for all specialists of the topic. A chemist and microscopic approach to the deterioration of lacquer discs will be developed.


Link to IASA


23rd September, 2019 


The Nuremberg Recordings – Listening to the XXth century– At IASA annual conference, 1st October 2019 (HILVERSUM, NL)



The Nuremberg trial was certainly one of the key moments of the XXth century. Only a small percentage of the trial was filmed, but the entirety of its verbatim audio was recorded on two complete sets of lacquer discs, each containing around 4000 disc sides of 15 minutes.

The “A” set, recorded on the best type of Presto discs, has been preserved by the International Court of Justice in The Hague, the Netherlands, and has now been moved to the National Archives of the Netherlands.

The French GECKO company has completed the digitization and digital restoration of this collection.
In this presentation, our project manager will discuss the various technical aspects of this outstanding project, revealing new documentary elements along the way.

link to IASA 


20th september, 2019


Nuremberg Trial audio recordings : the digitization and restoration project is complete !

Gecko is proud to announce that we have finally completed the digitization and digital restoration of the Nuremberg Trial audio recordings.

Shortly after WW2, in 1945-46, the historical trial of the highest-ranked living Nazis was only partially filmed, but it was entirely recorded on 2,000 16-inch instantaneous discs, for a total duration of around 1,200 hours.

The recordings were then careful kept undisclosed at the International Court of Justice in The Hague for 70 years. In 2018, Gecko was chosen to have the honor and responsibility of safeguarding and restoring the audio content of the trial in high definition digital format.

An outstanding project which took us more than a year to complete in the highest degree of confidentiality.

These recordings of immense historical importance will soon be available to the public, for the first time.

The memory institutions involved in this project are : the International Court of Justice (The Hague, Netherlands), the USHMM (Washington D.C., USA), and the Mémorial de la Shoah (Paris, France).




16th September 2019