JAEGER-LECOULTRE Jaeger-LeCoultre, « Prototype », movement no. 2192080, case no. 1026, circa 1973 A collectible and interesting, rare and unusual, “Prototype”, tonneau-shaped, automatic, stainless steel wristwatch with silvered linen textured dial, red sweep center second, day and date, luminous hands and applied blackened baton indexes. Fitted with a Cal. 906, mechanical, rhodium-plated, self-winding, 17 jewels, straight line lever escapement, monometallic balance, self-compensating flat hairspring, shock-absorbers, Delrin arm for the hacking system, screwed back, mineral glass. Dial, case and movement signed. Dim. 38.3 x 42 mm. Thickness 11.34 mm. Accompanied by a small modern JLC travelling box.