I thought that it was a Tre Tubi decal from your earlier pic but it clearly isn't. However it does look like a Re-paint decal from what I can see. These decals were given to authorized shops to put on when re-finishing bikes. It is the diagonal red banner on the left corner of the decal. I am also unfamiliar with pinarello decals that are printed on one piece of clear vinyl like these. It is probably a team bike painted by the team in team colors. I will look through the few books I have with pics from that era...