Quite interesting for a number of reasons. The car has Brown headlamps and E&J cowl lamps. Nice detail of the correct pin striping. An original top boot in place. Weed tire chains on the rear wheels, this would be typical in a muddy place like Ohio, Minnesota, or Kentucky in most of the driving season.
Great photo Herb.
Looks like an oil level sight glass to help keep a fellow out of that mud.
Ken in Texas
Slightly cropped with enhanced contrast: