I have for sale an ex-display Omega 19mm Padded Brown Alligator Strap No. 98000282 which uses a 16mm buckle - please see my other listings if you need a buckle.
Please note that this strap does have some very slight marks on the underside from poor storage/handling.
Straps like this retail for around £275 so grab a bargain with this one.
Please feel free to ask any questions.