Thanks for the compliment! It's been almost two weeks that I've been riding the Rotrax and it has been great. I really need to pony up and get a proper set of decals and a real headbadge.
As for the lever, it was sold as: "Orphan brake lever, French touring, right side". Technically, it's upside-down, but I can't be bothered to learn to use my right hand for the front brake, maybe if I ever get into riding a scooter or motorcycle. A seller in NJ had a pair of these for quite a few bucks, I almost bit on the ad but looked at related items and found this lever. It has the perfect bend for that "new" bar. When that lever was doing duty on my steel Cinelli road bar, the radius of the bar was slightly tighter than the lever, so it never sat quite right (it worked perfectly fine, I'm just splitting hairs over aesthetic lines at this point.)
Next up is a set of wheels built around a pair of high flange hubs, then she's done.
Phil