Oooo!, that's good, what's bad is, I just lost out on a nice NOS Delta that just finished it's auction at eBay, but I think it sold for more than I personally was willing to pay for anyway, so Idon't feel too bad about losing out on it. Still could have been a fantastic headset for my restoration project.
BTW, there's a big seller from the UK that still have a few NOS Stronglight A9s for sale at ebay right now for, IMO, a super fantastic price. Bought one already tonight for a spare or maybe my restoration project. So I still get to experience another of Stronglight's best ever headsets ( I already have an A9 on my PSV, and it has performed flawlessly since I bought the bike in 1984. I remember only adjusting it once after it bedded in and It's still smooth and with zero bearing play.

Chombi
84 Peugeot PSV
85(?) Vitus Carbone 7 Plus