Not OEM, though on an OEM 16mm brushed Omega tang buckle. It's a 19x16 rubberized Kevlar strap bought off of a fairly well known Canadian outfit's website that sells straps for Omega, IWC and Panerai principally. This is actually the "IWC" model. I really like it and I ordered a black buffalo grain as well. Not sure if forum rules prohibit me from naming a non-forum sponsor. I'll PM you. Here's a better shot from the side:
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