Who scores the Fontaine des Mers points: both players, or only the player who claimed the postcard?

Question

Accepted Answer

Only the player who claimed the postcard scores its points: 3 for each of their own buildings touching it. The colour token only marks who placed it. Le Penseur works the same way.

Paris: La Cité de la Lumière

Who scores the Fontaine des Mers points: both players, or only the player who claimed the postcard?