Perhaps we can get some discussion on why the hollow rivets aren't showing. Tank glued to the wreath? Also, I do not recall having seen an example with the split prongs holding the number box in place. Usually, there is a hollow rivet there too.
The Gustav Brehmer made Tank Badges usually use hollow rivets to assemble the tank and the number. Rivet heads do not normally show on the obverse. The crimped rivet ends for the tank should show on the reverse. Holes are there but no sign of the rivets. Never seen a split rivet used before on this badge.
