Titanic & Olympic pre-launch paintings on glass

I'm reasonably sure these paintings on glass were created in late 1911 or early 1912. What I'm not sure of is if they were sold at the same time to commemorate the Titanic joining her sister ship Olympic in service. Or if each was sold when the particular ship was going into service... the Olympic in 1911, the Titanic in 1912.

The ships were nearly identical, with Titanic being minimally longer and heavier in order to be the world's largest.

What makes me suspect they were done separately to commemorate each ship's entry into service is that both claim the ship to be the largest in the world.

The Olympic was the largest when she entered service in 1911. But then Titanic became the largest when she entered service in 1912.

WHITE STAR LINER "OLYMPIC"
THE LARGEST STEAMER IN THE WORLD.

WHITE STAR LINER "TITANIC"
THE LARGEST STEAMER IN THE WORLD.

Whether they were initially sold together or not, they were clearly designed to display together.