This is the perfect chain to wear your Jens Hansen Movie Ring around your neck on.   Has a standard modern clasp.  The chain worn in the films was 65cm (25.5").

For a bracelet length choose 18.5cm (7") otherwise prices shown start with 40cm (15.7") chain. Check dropdown for price of 45, 50, 55, 60 and 65 cm lengths (17.7", 19.7", 21.5", 23.5" or 25.5"). Ask for price and availability in other lengths.