Box, Deck Watch in box, Front, Dial, Back, Back closed, Back open, Movement, 2nd view of movement, 3rd view of movement, Case parts

This Longines Deck Watch has the word Cronometer on the dial. That spelling may imply that it was sold in a Spanish speaking market (or there may have been a marking error on the dial). I believe it is WWII vintage, but I have no documentation on it. It hacks with the winding and setting stem. The box and gimbals may not be original. The latching arm does not engage the slot in the side of the pot.

The serial number is 6433873. It is marked with 21.29 under the balance and the LXW ebauche code on the balance cock. It is 21J adjusted to temperature and 5 positions.