It is believed that this is a Champion Model 54 Series or similar.
From Champion's website regarding this model:
Patient comfort, ease of use, dependability and long life make our classic 54 Series the "workhorse" recliner/transporter of the industry. Both the manual and power chairs are ideal for oncology, infusion, dialysis therapies, orthopedics, pre/post op, and other treatment needs. The 54 Series is engineered for your most demanding applications, including round-the-clock use and overnight therapies.
These chairs were utilized at a high end specialty medical facility for under 7 years. They have been sitting unused for an additional 7 years so may need a small amount of cleaning, but otherwise great condition.