Potential Orangeburg Piping?

Hey guys, here’s a few photos I took performing a sewer scope inspection on a house built in 1959. Was clearly cast iron below the home, then it transitioned to a piping darker in coloration, but definitely does not appear to be ABS. There are many indentations and bulges inside this section of the piping, particularly at the floor of the pipe. I’m leaning toward it being Orangeburg, but not 100% sure, was curious to get your thoughts on the matter. Thanks!

Not very good photos, but might be Orangeburg. Age is a clue…1950’s to 1972ish. (Although versions of Orangeburg date back to the 1800’s.)

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No video? Can’t tell anything from those pics.