This is a vintage Partner P100 chainsaw.  The engine has really good compression and runs really good, see video.  Still has a good air filter and it did not leak gas or oil.  Great saw to either restore or if you have another one, you can swap parts onto this one and have a complete saw, and a big one at that.  The power head weighs about 18 pounds.  As you can see, this does have some issues.  The chain brake handle is missing.  The choke lever and stop wire are missing. There is a makeshift choke rod that works to start the saw.  The pin that holds the stop and choke levers in place is not right, which looks like a nail was inserting to replace the pin.  One of the starter dogs on the flywheel is broken, but only the dog and not the part that secures the dog to the flywheel.  Other than that, nothing I can see from a mechanical concern.  Ships in a double walled heavy duty box.