Pair of 18th century English Chairs

Pair of English Chairs , Georges III, in massive mahogany , with removable seats with original silk under yellow recent fabric . Dated , signed and numeroted , I and II and other inscriptions graved on each chair , on the seat frame , 1789 , Aaron or Adam Pickering ? 
Old restaurations, two back legs about 10 cm on one chair . Solid and confortable