Hidden Vintage Watch Jaeger Lecoultre Duoplan by Hermes Paris

From the 1920s 1930s. Extremely rare. 

The band is made of silver 925 and is not original.

The case is original and made of stainless steel, measuring 15.7mm x 34.7mm including lugs. 

Dial: refinished.

The length is approximately 8.3 inches, 21.1 centimeters.

Manual movement, backwind, in great condition, working.