Guy Lautard referred me to:
This sounded so good I had to try some. I've been looking for a good clearcoat for a long time. Never did find the stuff Ted recommended.
This is a good product. After polishing up a piece of brass and then cleaning it well with lacquer thinner and then denatured alcohol, I followed the direction of just wiping the stuff on with a piece of material from an old T-shirt. Everbrite cautions that the workpiece must be absolutely flawlessly clean for the coating to work well.
It went on easily with no bubbles, drip, sags, orangepeel, or even dust specks. It just levels out and visually disappears. The only way I could tell that it was coated was by smelling it.
I can't attest to the durability of the stuff, but testimonials on their website seem to. I've put my test specimen outdoors where it shall remain in all weather to see what happens. I'll make another test piece to age indoors.