The first watch to have a light in the case using an electric bulb powered by two batteries in the case. Early ones were labelled ‘Electric’ and later ones ‘Instalite’. On page 211 of the PD Book.
New Old Stock, never been worn, 17 jewels manual wind movement showing house and minutes, polished chromed case with three apertures at the top which let the light through. One bulb covers all three apertures powered by two 357 batteries. Denim blue matt dial signed Sicura Electric. On a superb dark blue tropic strap.
Size 40x48x15mm deep