Yeah that will be a new mirror. They get old and brittle. My mechanism once snapped when I went to fold the mirror in and another time a mirror snapped when some kind person walking up the path hit it forward. I was just in a scrap yard yesterday getting some struts for my saxo as they're knackered and using the scrap parts temporarily because I can't afford to fully repair my current ones. I got them off a blue saxo desire, it looked to have an intact passenger wing mirror. The mirror is the colour coded type but the coloured part had been removed. If yours is colour coded you can just pop off the coloured part and refit to the replacement. If it isn't colour coded then I'm not being helpful. I think they may deliver but I can't guarantee it. Here is the place.
Altham Car Recyclers
8, Moorfield Industrial Estate, Burnley Rd, Altham, Accrington BB5 5TX
01254 382896
https://maps.app.goo.gl/4Qmmb