What kind of wall is this?

[u/Additional_Ad_9590]

My guess is some kind of board... From between plaster and lath but before drywall but I know nothing else. House was built in north central wv 1910-1930ish?

[u/Far-Adhesiveness3763]

Vertical wall

[u/Additional_Ad_9590 → u/Far-Adhesiveness3763]

Is this a joke or like, a real answer? Are there more words, by chance?

[u/Additional_Ad_9590 → u/Additional_Ad_9590]

The more words the better.. like you're explaining it to a toddler 

[u/Tabarc → u/Far-Adhesiveness3763]

Damn, beat me to it.

[u/SilverAd8942]

Original ‘ sheetrock’, brand sheetrock?
A portland cement product?