This convertible chair/table is from circa 1910-1915 and is in a style
that was later created in a large size by Stickley Furniture. This piece
does not have the size, construction (thru-tenon and added drawer on the bottom) or type of more broadly spaced brads
like Stickley pieces do, so I do not think it is from that maker. Exact maker would be unknown unless
you do find a label or burnished mark somewhere. It looks to be a dark stained oak.
The condition is rough, but it is still an interesting piece. This chair table has a current value of $200 to $250.00 retail.
Some sites that I recommend are Varagesale.com, Chairish.com, Ioffer.com, Furnishly.com, Deconet.com, and letgo.com.
You can also go to invaluable.com or liveauctioneers.com and search their directory for an auction house near you and consign to them.
To finish, I will need you to click the five stars at the top of your screen and hit the submit button, thanks!