A Rare Stella McCartney Roll Gold Bracelet[ this is a one off]

HELLO,,,I HAVE HERE A VERY RARE ROLL GOLD STELLA MCCARTNEY BRACELET,,,,I'VE LOOKED ON LINE OVER AND OVER AGAIN AND CANNOT FIND ANY BRACELET THAT LOOKS LIKE THIS ONE,,,,IT HAS SCREWS ON THE EDGE ,,,IT MEASURES AT AROUND 7.5 INCHES LONG BY 1.5 INCHES WIDE,,,,,IT HAS THE MARKS 'STELLA McCARTNEY MADE IN ITALY....I BROUGHT IT IN A CHARITY SHOP ...IT IS QUITE STURDY AND HEAVY,,, THE METAL IS EITHER ROLL GOLD OR GOLD PLATED,,,,I DON'T KNOW IF IT'S HER FIRST PIECE,,,,,CAN SOMEONE TELL ME ABOUT THIS SUPERB BRACELET.........THANK YOU!