There didn't seem to be any way to open it, no visible seams.

It was now closed up, with no seam visible.

Said panel had no visible seams until after it came off.

It had no visible seams or openings of any kind.

The passenger air bag, for instance, has no visible seam.

Some had only one visible seam, and few showed buttons.

The result is a repetitive image with visible seams.

The result is a rather non-repetitive image with visible seams.

There were no visible seams, and the block felt solid.

And that results in visible seams where the individual sections overlap.