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The 1930 Illinois Grade 163 Bunn Special is an exceptionally rare, highly coveted 23-jewel railroad-grade pocket watch manufactured by the Illinois Watch Company. Introduced right around 1930 following Hamilton’s acquisition of Illinois, the "163" designation specifically stands for a 16-size movement with 23 jewels. It represents the pinnacle of American horological engineering, originally retailing as one of the most premium and expensive watches of its era,