Hi John, unfortunately the original PVD-coated flat-band bracelets seem very hard to come by. I myself have found just one.

TAG Heuer themselves do not seem to provide the item any longer from what a fellow OtD blogger posted some time ago.
My advice: if you want it soon and without spending a lot, either settle on a generic PVD bracelet or switch from bracelet to a racing strap, which IMO suits the watch as well (though of course is not 'the right one'!).
Instead if you do have one and it's in too bad conditions to be used, consider having it re-PVD'ed, which however is costly.

Meanwhile keep watching round, sooner or later one should surface, but bear in mind your wait may become a lengthy one.
Cheers.
Fabrizio