I knew I recognized the form of this chair, even with the poor paint job. It is a Paul McCobb Planner Group Chair and it was made by the Winchendon Furniture Company as part of one of the longer lasting lines of the mid-century modern design era (1950 to 1964).
Unfortunately someone decided to give it a paint job. Luckily they didn’t it very well. It seems like the original finish is mostly intact under the paint. As such the damage may be reversible and you could get the underlying maple to shine once again.
Other than the paint, the only notable flaw is that one of the back support spindles has been broken and repaired (see detail pictures) Otherwise this piece is in good shape.*
Just in case you find it relevant, the height of this chair is 31 inches to the top of the back. The maximum depth is 19 1/2 inches and it is 17 inches wide.
*The previous owner and presumed painter was left-handed. We were able to tell this by trace evidence left on the underside of the seat. We’ve taken the liberty of cleaning this detritus off for you. This isn’t the first time we’ve had to do it, nor the most notable (that one involved a vacuum cleaner and a putty knife). We respectfully ask that, in the future, you consider wiping your finger on the cuff of your pants, rather than upon the furniture. Thanks in advance!