Procuration
Procuration is the action of taking care of, hence management, stewardship, agency. The word is applied to the authority or power delegated to a procurator, or agent, as well as to the exercise of such authority expressed frequently by procuration, or shortly per pro., or simply ''p.p.''
Etymology, history, and usage
The correct usage is the subject of some debate. It has been understood as both "through the agency of" and "on behalf of".The reason for this is that the meaning of the phrase per procurationem is ambiguous if used with undeclinable English names.
Procuratio is related to the words "pro" and "cura". It is thus close in meaning to "agency" — acting instead of someone. The phrase 'per procurationem' thus means "by/through agency".
Note that the phrase does not contain a preposition "of". This is because this idea would be expressed through the genitive case in Latin. With time, Latin or Latinized names fell out of usage, and the genitive case of the agent's name was thus lost.
The original would look like this:
or
This seems to be the most simple and logical reading.
The other option is that "per procurationem" could be understood as a complete adverbial phrase in itself — "by the agency
Business usage
A common usage of per procurationem in the English-speaking world occurs in business letters, which are often signed on behalf of another person. For example, given a secretary authorized to sign a letter on behalf of the president of a company, the signature takes the form:or
Commonly in practice, an alternative form is used:
In German-speaking countries, ppa. indicates that the person signing the document has special authority according to commercial law to sign documents in the name and on behalf of the company that a normal employee or representative of the company does not have.