These canvas watch straps – available for watches with 18mm lug size – were very widely used in the second world war by US and UK forces. For older watches this is the correct strap to use and was the predecessor to the nylon NATO straps used today. They look extremely good on older style military watches such as the W10, GG-W-113 and A-11 and also on some contemporary models such as the MKIII. Length is approximately 27cm excluding the buckle.
18mm NATO Straps