Pier letterbox - how to install?

Thinking about installing a new letterbox. This sort of design caught my eye. Seems to be made out of painted metal (as opposed to the presumably more solid sandstone stuff). Does anyone know what's involved with installing one of these? Is it just a matter of putting it in concrete? Thanks for your help!
 

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dig hole.
place concrete, and level.
place some mortar, and stand new box on top.
clean up around the base with a dry dust brush when the mortar is almost dry:rolleyes:
 
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