"long rod on left side"....if it is a vertical lever coming out of the left brake assembly it is a "live PTO". If operating properly, pulling back on lever will stop forward motion but not the PTO. Many developed problems over the years (slips and grabs) and may have been de-activated.
What appears as part of a 3 point could be the factory installed rock shaft operated by the hydraulic cylinder. It was designed to raise and lower mounted implements.
With good running condition and like new rear tires and rims you should have a nice tractor.