The only finish I believe to be similar in "distressed state" is the train wreck that was the Casati's original paint. The remaining pink looked to be a pink-tinted clear with some sort of flakes suspended in it, giving the true finish a pearl look. The few spumoni Pinarellos I've seen in the flesh look to have an identical finish.
As the finish breaks down, you're left with the undercoat, and in my example the gold undercoat was dull and came off whenever the bike was handled. Pretty sure if I were to have built it up and ridden it, sweat dropping onto the frame would've hastened the remaining paint's demise even quicker. The Casati didn't fade uniformly, so I never even considered clear coating the frame to preserve things - I just gave up and sold it. Then bought it back, and of course you know I went paint-free in the end.
Here's a shot showing the original pink where the tubing transfer was; note the pink is somewhat glossy while the surrounding gold undercoat is matte - and rubbing off little by little on the top tube just ahead of the seat lug:
In your case, the paint looks good enough to clear over, with the exception of course being the top tube. Tough call, to be honest - it's an iconic finish, but fragile.
DD