Made in small numbers, watches such as this reference 165.024 were intended for military use until around 1970.
It was nicknamed the ‘big triangle’ due to the large shape appearing next to the 12. The original dial showing the big triangle had been replaced but came as part of this lot, as did the original minute and seconds hands.
To the back is the W10 inscription, which was included on all timepieces issued to the army.
From a private collection, it sold on low estimate at the April 19 auction for £12,000.