need new movement retaining ring for rolex datejust 2

[umaz662]

hi all a screw snapped inside the movement retaining ring and i need a new one any ideas where i can find it the watch is a rolex datejust 2 here are pics thanks

[highoeyazmuhudee]

is this a movement ring for an ETA inside a rolex calibre case?

[umaz662]

yes