Not Mdina by the look of it Chris, the shape is not right nor the use of colour. The Boffos introduced the technique of polishing out pontil marks to production at Mdina, an item with a polished out pontil mark does not imply it would have been made by one of them but can indicate a time period for production at Mdina.
I have seen these vases around and I suspect they are from Eastern Europe (possibly Lithuania) or maybe China.
John