MADE OF PARKESINE (AN EARLY TYPE OF "PLASTIC) 4 PULL-OUT RIMS WITH LENS PAIRS, BOTH RIGHT AND LEFT LENS. VERY RARE JULIUS KING PATENT 1884 OPTICIAN'S HAND-HELD 4 PAIR TRIAL LENS SET. AUTHENTIC AND A GREAT DESK TOP CURIOSITY PIECE 125 mm (5") IN LENGTH AND 38 mm (1 1/2") IN WIDTH.
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