Choosing shell back vs solid back can affect the look of the back of the badge as well as the weight of them. Solid back badges are a bit heavier than shell back badges.
Either option can be glued into a wallet without any issue. In the case of glueing it into a case, the badge back choice can mostly be a personal preference.


Shell Back Badges - ridges & indentations similar to the front of the badge. 

Shell Back


Solid Back Badges - Smooth on the back.

Solid Back Badge




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