Much like the Council Flaps, Lodge Pocket Flaps show that the warer is an active, dues paid, member of that lodge. Over the years various Lodge Flaps have been designed for various occasions and special events such as NOAC. For more history on Lodge Flaps in general, check out this link from the Order of the Arrow.
The first Lodge Flap of Dzie-Hauk Tonga Lodge.
OAIG: F-1a*
OAIG: S-20
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Lodge Council member (With yellow thunderbird added in upper left corner)
This NOAC flap also used the same bottom as the previous patch (S-38/X-6)
Images and information sourced from oainsignia.com