BF Badge: First Pattern Badge (with Crown)

[Fordy]

I understand that most available BF badges are copies. From advice I have seen (https://www.thirdreichmedals.com/pictures/fake-bf-badges.html) :

 

Quote

As a general Rule any of the first pattern Kings Crown with a button stud fixing marked by Gaunts is a copy , On the 2nd pattern by Gaunts, If it has the same pin/hinge fitting as the 3rd pattern it is also a copy, and avoid any 3rd patterns beginning with the 19000 + series

Researching old listings and pictures, I can see examples of second & third pattern badges that don't fail the above advice, but I have not seen an example of the first pattern (showing the crown) that doesn't have a buttonhole style with a Gaunt marking. Has anyone got a picture of and original first pattern, preferably the back of it?