I am sure this is a 1923 "4 passenger coupe", I have always called them an opera coupe rather than a doctors coupe....Their is just enough room to squeak 4 passengers inside.....The driver left front and perhaps a child on the jump seat right front and in the back a 3/4 bench seat for perhaps two adult....In the "oprea coupe" mode when off to the opera you would have the shuffer driving with the lady in the back with her big opera dress and the jump seat would be let down for more room, there should be a hat box just behind the drivers seat...Anyway, there was no leg room behind the drivers seat was the reason for the built in hat box with the three quarter bench seat in the back....I own a 1923 Hupmobile Opera coupe which I restored a few years back...I even added them there fancy flower vases in the back.
The reverend Hurlburt was at the first Durant meet in Dearborn Michigan in 1981. I seem to remember him as being colorful in the best Southern preacher tradition. Nice car, price does not seem out of line.