I have pair of them, but they are tubulars.

Thanks for the response - would normally consider tubulars, but am trying to match a front that I recently acquired (and I'm not averse to a pair if that's the way they come), so in this instance I will stick to trying to find clinchers.

Weird timing. I was at a swap meet yesterday and the previous non-profit arm of Trek had dozens of those rims along with a ton of other new old stock (NOS) stuff. Maybe even 100 NOS carbon rims from that era. So weird. There were a ton of tubular and clincher paired spoked rims still in their packaging. A few different depths. Reach out to them at https://www.dream-bikes.org/.