This 33mm. Sterling silver vintage WW1 military era CYMA/TAVANNES trench watch is an original example. The porcelain dial with original hands, blue seconds register and red #12 make this watch easy on the eyes! The manual winding SWISS CYMA/TAVANNES movement was just cleaned and is accurately keeping time. The onion crown is correct to the watch and likely original. Trench watches are really coming into fashion these days. Grab this great example before they escalate in value.