As Stephen patiently waited, I kept second-guessing myself. But the happy outcome was simpler than I suspected. By slightly counterboring the rim and shortening the spoke lengths, the original spokes could be used. Enough of their chrome (and charm) was still intact and only one spoke was missing. That one had to be fabricated.
You'll laugh at the solution for the one missing spoke. An XL14 spoke with 1.5mm center was trimmed, then threaded to M1.6 and a matching nut soldered on. We're talking tiny. When the nut was machined round, it was able to slip into the hub recess. The spoke length needed is so long, this hybrid spoke end had to be spliced to another with the hypodermic tubing I thought would be needed for every spoke. Whew, sure glad it was only one. Look closely to spot the spliced spoke among the rest: