[Sorry for being slow, went to see Napoleon.
Have done several searches that usually shows posts from here on the forum. Just not seeing hardly any engraved ones.
Thank you Sir for sharing that image. You are right about not seeing many engraved examples. They are just not out there unless there are a few hiding in sock drawers.
As their popularity goes on a bit of an upward climb, maybe a few examples will show up.
Merry Christmas to you and yours!