Pair of Side Chairs 
Delaware Valley, possibly New Jersey, 1755-90 
Walnut; tulip poplar (one slip seat) 
Dimensions: 39-7/8 x 22-1/4 x 20-3/4 in. 
(Inv. 0303) 

“I” and “II” are chiseled into a side rail and the front seat rabbet, respectively, on one chair.  “II” is chiseled into the front rabbet and “III” into the inside of the rear rail on the other chair. One slip seat is marked “VI”; the other is a replacement 

Philip Zimmerman's Analysis of this chair may  be viewed HERE