The first watches for the pilots of the “new weapon” SLC were delivered in the middle of the 1930’s by Guido Panerai & Figlio to the Commando del 1° Gruppo Sommergibili of the Royal Italian Navy. According to the timeline of the development of the top secret slow running torpedos (siluro a lenta corsa, short: SLC) by the inventors Teseo Tesei and Elios Toschi, waterproof and luminous instruments for the pilots were necessary to carry out proper exercises and to control the SLC in depth and darkness.

The chapters I and II, dedicated to the first watches for underwater use (Ref. 2533 and 3646) take the readers of our book “The References” 1930’s-1940’s into these early years. Teseo Tesei and Elios Toschi’s ideas became real. But strategic decisions after the Italo-Ethiopian War stopped the secret SLC project. The tests with these small weapons were archived and the Royal Italian Navy focused their interest in huge battleships, cruisers and destroyers.

The SLC project was re-started by the 1st Flottiglia MAS in 1939 at the advent of the Second World War. With the first missions of the Mezzi d’Assalto carried out from August 1940 onwards, the demand for skilled operators as well as new equipment – and more instruments for the operators – grew fast. An early Ref. 3646 / Type A, dated to April 1940, is featured in chapter II.I followed by the timeline of the missions carried out by the operators of the Decima Flottiglia MAS, the special commandos of the Royal Italian Navy.

The photo shows page 96 of “The References” with a historic photo from June 1940: The two inventors of the SLC, Teseo Tesei and Elios Toschi, Alberto Franzini and Gino Birindelli above their co-pilots stand together with a royal visitor: Principe Aimone di Savoia Aosta, Duca di Spoleto –  just a few weeks before the first missions of the new weapon SLC were about to write naval history.

Read more about “The birth of a legend – the first Panerai watches (1935-1939)” in chapter I, followed by the timeline of the missions during the Second World War in chapter II.I – more information on the historic content in our “The References” book set with a total of 1392 pages can be found here. Read about the featured watches from Guido Panerai & Figlio in the first and second volume here.