Key legal question
Whether the brokerage contract derogated from Art. 413 CO so that commission was due without a completed sale.
Extracted holding
The contract did not clearly exclude the dispositive rule of Art. 413 CO; commission remained dependent on conclusion of the principal contract.
Extracted reasoning
The clause was not drafted with sufficient clarity to create a guaranteed commission for mere presentation of a buyer; its wording, read as a whole, still linked payment to the sale being completed.