Intruder saddle bag logos

Hi everyone my brother gifted me a set of panniers that were on his bike when he bought it, he has fitted hard luggage and no longer requires them.  I would like add INTRUDER  logos like the ones in the attached picture. Anyone know the part number for these so I can search online for them. They need to screw on from behind. I've seen the plastic self adhesive ones but I think they would have difficulties sticking to the leather, hope someone can help thanks John