What is this exterior wall material?

Can anyone help me identify this structural exterior wall material? It’s on a 1930’s retail building. It looks like oversized brick. Image taken at a corner.

For reference, 16 x 8 concrete block on the adjacent building to the right.

Maybe I asked this too soon. Picking the right search words helps.

Double Through Wall Meridian:
This is the largest of all meridian bricks, coming in at a nominal measurement of 8 in. x 16 in. x 8 in. It is a sturdy yet almost entirely hollow brick, making it easy to handle, stable, and strong.

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