thanks Nathanial for the link to the blog and the photos...
It is interesting that this order bears monogram of a reigning King/Queen, IF it was made during their reign...so CP Mary's order must have been made just for her? which wouldn't make sense considering that they had Queen Ingrid's order, or maybe other ones available at the time....so Stig could be right that they 'change' monogram based on who is reigning at the time the order is given. This makes more sense to me.