Some star possibilities.

https://cdn1.iconfinder.com/data/icons/stars-pointed/250/Silver_8-point_star-1024.png

https://www.iconfinder.com/icons/6478586/award_silver_star_icon

I prefer this design shape. In terms of a case label, if the star is centred in the writing, the above star fits better. If to the side, say left, the bottom star shape works.

https://polyhedr.com/the-star-of-hope.html

Maybe a blue and silver star like the paper model? Argento and Azure. The same as the heraldic Hahn Family colours.