Inside it would have been the official mark (seal) of the sender and this would have been attached to a letter, much like a stamp, which could have been sent anywhere across the Empire.
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How to Make Wax Seals (Using Hot Glue!)
Just imagine your next card or letter with these incredible hot glue ... While your glue gun is heating up, place your wax ...
Some say they want to stamp their marriage notification forms with personal seals to make them keepsakes. The Justice Ministry plans to end the mandatory requirement for hanko in procedures ...