I have about double your 122,535 miles on the Engine. So I think unless one of the Former owners teribbly abuse it or over heated it or WVO ed it there the Piston, Rings, and Cylinders are likely OK.
Stuck Piston Rings can happen if the Car sat for a long time, Car driven with a Coolant Tmermostat opening to soon or entirly removed or other things that would cause excessive Carbon Build up in the Engine.

Putting something like Marvel Mystery Oil into the Cylinders and letting it soak a week or more in there might loosen them if that is the problem. It has been said that switching to using Synthetic Oil dose the same but takes 200-300 miles of driving.

If the Turbo Seal is leaking on the Exhaust side if you remove the Parts between the Turbo and the Exhaust Pipe you can look inside the Turbo. If the Carbon is nice and shiny wet looking Oil has been getting in there.

If you remove the Turbo Charger and see that wet shiny Carbon in the Exhast Manifold the Oil is coming out of the Engine.

It is possible for Oil to come of the Compressor side of the Turbo and make it into the Engine but it is hard to tell due to the Oil Mist from the Blow-by and it is a long way for the Oil to travel upwards and down the Mainfold so that is less likely.
It sort of depends on how much Oil you find inside of the Turbo Compressor Housing.

If Oil is getting up into the Cylinders sometimes the Precombustion Chamber will exibit that shiny wet Carbon look.

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84 300D, 82 Volvo 244Gl Diesel