Now that we have better pictures, I strongly suspect that the frame is 2-3 years newer than claimed. The 1985 did not have a pump peg. Also, it has the Pinarello branded dropouts with the rearward positioned cable stop. These do not appear in the 1987 literature but do in 1989 (you can't tell in the 1988 pics). However, since the palmares decal does not indicate the 1988 TDF victory, we know it's not a 1989. Consequently, the evidence is pointing towards a 1988 model and possibly a 1987, if the dropouts were changed after the catalogue release.

I can't quite read the date codes on the brakes. It certainly would be interesting to know what they are. If I'm correct about the dating this is also about the time when the name for the colour scheme was "Spumoni".

Regarding the decals, Pinarello had the worst, and they never learned. I have a 2001 Prince that I bought NOS in 2003 and they were flaking when I bought it. They continued to flake, while it was just hanging, waiting for the components to perform the build. Personally, I'd put in the rest of the season on the bicycle before I made a decision on whether to clear coat or replace the decals.

Regardless, congratulations on your new acquisition. Enjoy.