LACO aviation deck watch FL 23883, Germany around 1940, manual winding, gray metal case, snap on case back & bezel, movement & case number 4788, winding crown later, black dial with luminous numerals & Indices, blued luminous hands, gold plated movement, 22 jewels, big Guillaume-balance, diameter approx. 55 mm, leather strap missing, otherwise condition 2-3