I have an unusual hallmark on a knife.
I have a suspicion it may have been made out of another piece as it has a hallmark on it I can't find.
It has very clear London hallmarks for 1991 and at the side another hallmark of three crowns. Could this have been on an original piece but would the asset office allow it to stay on? Has anyone seen it before? Is it a commemorative hallmark?
Thank you
![Image](https://www.925-1000.com/pics/Ximg.jpg)
![Image](https://www.925-1000.com/pics/Ximg.jpg)